CWE-204 · Observable Response Discrepancy

191 CVEs classified under CWE-204 (Observable Response Discrepancy). Browse by severity and year.

Top CVEs for CWE-204
CVESeverityScorePublishedSummary
CVE-2018-25350Critical9.82026-05-23userSpice 4.3.24 contains a username enumeration vulnerability that allows unauthenticated attackers to discover valid usernames by sending POST requests to th…
CVE-2026-15747Critical9.12026-07-14Mojolicious versions from 4.59 before 9.48 for Perl expose a stable representation of the session CSRF token to a BREACH compression oracle. _csrf_token gener…
CVE-2026-69519High8.62026-08-20Observable response discrepancy in Azure Stack HCI allows an unauthorized attacker to disclose information over a network.
CVE-2025-5485High8.62025-06-12User names used to access the web management interface are limited to the device identifier, which is a numerical identifier no more than 10 digits. A malici…
CVE-2026-19205High7.52026-09-04Observable response discrepancy vulnerability in GastroMenum GastroMenum Web Panel allows Account Footprinting. This issue affects GastroMenum Web Panel: befo…
CVE-2026-19080High7.52026-09-04Observable response discrepancy vulnerability in Menulux Software Inc. Menulux Portal allows Account Footprinting. This issue affects Menulux Portal: before 2…
CVE-2026-27462High7.52026-08-21Combodo iTop is a web based IT service management tool. Prior to 3.2.3, iTop returns different responses for valid/invalid usernames depending on multiple fact…
CVE-2026-33419High7.52026-03-24MinIO is a high-performance object storage system. Prior to RELEASE.2026-03-17T21-25-16Z, MinIO AIStor's STS (Security Token Service) AssumeRoleWithLDAPIdentit…
CVE-2025-12455High7.52026-03-13Observable response discrepancy vulnerability in OpenText™ Vertica allows Password Brute Forcing.   The vulnerability could lead to Password Brute Forcing in V…
CVE-2025-46390High7.52025-08-06CWE-204: Observable Response Discrepancy
CVE-2025-3092High7.52025-06-24An unauthenticated remote attacker can enumerate valid user names from an unprotected endpoint.
CVE-2021-20049High7.52021-12-23A vulnerability in SonicWall SMA100 password change API allows a remote unauthenticated attacker to perform SMA100 username enumeration based on the server res…
CVE-2021-34580High7.52021-10-27In mymbCONNECT24, mbCONNECT24 <= 2.9.0 an unauthenticated user can enumerate valid backend users by checking what kind of response the server sends for crafted…
CVE-2026-60007High7.42026-08-04In Eclipse Milo versions 0.6.0 through 1.1.4, username-token processing returns distinguishable errors for invalid RSA PKCS#1 v1.5 padding and other authentica…
CVE-2026-4113High7.22026-04-09An observable response discrepancy vulnerability in the SonicWall SMA1000 series appliances allows a remote attacker to enumerate SSL VPN user credentials.
CVE-2026-86758Medium6.52026-09-09Snipe-IT before 8.7.0 fails to properly enforce the viewKeys authorization gate in CSV export and API index endpoints, allowing authenticated users with only l…
CVE-2026-34264Medium6.52026-04-14During authorization checks in SAP Human Capital Management for SAP S/4HANA, the system returns specific messages. Due to this, an authenticated user with low…
CVE-2025-67874Medium6.52025-12-16ChurchCRM is an open-source church management system. Prior to version 6.5.0, the application echoes back plaintext passwords submitted by users in subsequent…
CVE-2025-66307Medium6.52025-12-01This admin plugin for Grav is an HTML user interface that provides a convenient way to configure Grav and easily create and modify pages. Prior to 1.11.0-beta…
CVE-2025-61907Medium6.52025-10-16Icinga 2 is an open source monitoring system. In Icinga 2 versions 2.4 through 2.15.0, filter expressions provided to the various /v1/objects endpoints could a…
All CVEs classified under CWE-204 — newest first (page 1 of 2)
CVESeverityScorePublishedSummary
CVE-2026-84717Medium5.32026-09-23A flaw was found in the Ansible Automation Platform automation-controller. The unauthenticated Bitbucket Data Center webhook receiver skips HMAC signature veri…
CVE-2026-71462Medium4.12026-09-23StringListPathField.to_internal_value() calls os.path.exists() on unbounded user-supplied paths. 200 vs 400 response reveals existe…
CVE-2026-71458Medium5.02026-09-23URLModificationMiddleware resolves named-URL lookups against unfiltered Model.objects before RBAC. The 403→404 shim only rewrites 4…
CVE-2026-89173Medium5.32026-09-11Smart Video Intercom System developed by Kingdom Communication Associated has a Sensitive Data Exposure vulnerability. Unauthenticated remote attackers can enu…
CVE-2026-9161Medium5.32026-09-10Observable response discrepancy vulnerability in DernekPlus Website Template allows Account Footprinting. This issue affects Website Template: through 1009202…
CVE-2026-86758Medium6.52026-09-09Snipe-IT before 8.7.0 fails to properly enforce the viewKeys authorization gate in CSV export and API index endpoints, allowing authenticated users with only l…
CVE-2026-19205High7.52026-09-04Observable response discrepancy vulnerability in GastroMenum GastroMenum Web Panel allows Account Footprinting. This issue affects GastroMenum Web Panel: befo…
CVE-2026-19080High7.52026-09-04Observable response discrepancy vulnerability in Menulux Software Inc. Menulux Portal allows Account Footprinting. This issue affects Menulux Portal: before 2…
CVE-2026-78584Medium4.32026-09-02Observable Response Discrepancy (CWE-204) in the Kibana Osquery feature can lead to information disclosure via Query System for Information (CAPEC-54). An auth…
CVE-2026-84307Low3.72026-09-01Filament is a collection of full-stack components for accelerated Laravel development. From 4.0.0 until 4.12.5 and 5.7.5, packages/panels/src/Auth/Pages/Login…
CVE-2026-81033Medium5.32026-08-26Automatisch reveals whether an address is registered through the response to its forgot-password request. The controller at packages/backend/src/controllers/in…
CVE-2026-75575Medium5.32026-08-25Rocket.Chat exposes the sendForgotPasswordEmail Meteor method without a DDP rate limit, so an unauthenticated caller may invoke it as often as it likes. The me…
CVE-2026-27462High7.52026-08-21Combodo iTop is a web based IT service management tool. Prior to 3.2.3, iTop returns different responses for valid/invalid usernames depending on multiple fact…
CVE-2026-69519High8.62026-08-20Observable response discrepancy in Azure Stack HCI allows an unauthorized attacker to disclose information over a network.
CVE-2026-660022026-08-20Frappe is a full-stack web application framework. Prior to 15.115.0 and 16.27.0, the public request-data web form and PersonalDataDownloadRequest class in frap…
CVE-2026-547392026-08-19Lemmy is a link aggregator and forum for the fediverse. Prior to 0.19.19 and 1.0.0-beta.1, Lemmy's login endpoint in crates/api/api/src/local_user/login.rs ret…
CVE-2026-19965Low3.72026-08-17A vulnerability was determined in automad up to 2.0.0-beta.32. This vulnerability affects the function requestPasswordResetToken of the file automad/src/server…
CVE-2026-14672Medium5.32026-08-13Observable response discrepancy in PostgreSQL SCRAM authentication allows an unauthenticated user to test the existence of a user via observing the SCRAM itera…
CVE-2026-73306Medium5.32026-08-12Budibase is an open-source low-code platform. Prior to 3.39.25, POST /api/global/auth/:tenantId/login incremented the failure counter in packages/worker/src/ap…
CVE-2026-72588Medium5.32026-08-10A user enumeration vulnerability in bluewave-labs/Checkmate through 2.1.0 allows an unauthenticated remote attacker to determine whether a given email address…
CVE-2026-55998Medium5.32026-08-05The endpoint /v3/import/{token}_{clusterId}.yaml retrieves the cluster object before validating the token. When a valid cluster ID references a cluster that ha…
CVE-2026-60007High7.42026-08-04In Eclipse Milo versions 0.6.0 through 1.1.4, username-token processing returns distinguishable errors for invalid RSA PKCS#1 v1.5 padding and other authentica…
CVE-2026-14202Medium5.32026-08-04Observable response discrepancy vulnerability in Bilin Software and Informatics Consultancy Inc. HUMANIST Digital Human Resources allows Account Footprinting. …
CVE-2026-547682026-07-31WPGraphQL provides a GraphQL API for WordPress sites. From 2.0.0 until 2.15.1, the deprecated user field on SendPasswordResetEmailPayload lets an unauthenticat…
CVE-2026-42218Medium5.32026-07-20xrdp is an open source RDP server. Versions 0.10.6 and prior contain a timing side-channel vulnerability in the login interface. Due to a discrepancy in respon…
CVE-2024-23574Medium5.32026-07-17HCL Aftermarket EPC is vulnerable to attack since It was found that a malicious actor can use brute-force techniques to either guess or confirm valid users in…
CVE-2026-47083Medium4.32026-07-16An issue was discovered in cyrus-imapd in Cyrus IMAP through 3.12.2. There is an ESEARCH cross-user content oracle. By using the ESEARCH command, an authentica…
CVE-2026-15747Critical9.12026-07-14Mojolicious versions from 4.59 before 9.48 for Perl expose a stable representation of the session CSRF token to a BREACH compression oracle. _csrf_token gener…
CVE-2026-44753Low3.72026-07-14SAP HANA Database (user self service tools) allows an unauthenticated user to send specially crafted requests that produce distinguishable responses, enabling…
CVE-2026-61503Medium5.32026-07-13Rejetto HFS 3.0.0 through 3.2.0 returns observably different responses from its login endpoint depending on whether the submitted username exists. A remote una…
CVE-2026-53422Medium4.32026-07-02Observable Response Discrepancy vulnerability in Erlang OTP ssh (ssh_sftpd module) allows an authenticated SFTP user to enumerate the existence of files and di…
CVE-2026-53908Medium4.32026-07-01MCO is vulnerable to User Enumeration through authentication-related functionalities. The application returns distinguishable responses for valid and invalid u…
CVE-2026-53947Medium5.32026-06-24Ghost is a Node.js content management system. From 5.18.0 until 6.21.1, a discrepancy in responses from the members signin endpoints made it possible for an un…
CVE-2026-544452026-06-17vantage6 is an open-source infrastructure for privacy preserving analysis. Versions prior to 5.0.0 provide an initial user with username `root` and password `r…
CVE-2026-439262026-06-04FOSSBilling is a free, open-source billing and client management system. Prior to version 0.8.0, the password reset confirmation endpoint `/client/reset-passwo…
CVE-2026-45294Medium5.32026-05-29FreeScout is a free help desk and shared inbox built with PHP's Laravel framework. Prior to 1.8.219, the password reset endpoint returns visually distinct resp…
CVE-2026-45620Medium5.32026-05-29WWBN AVideo is an open source video platform. In 29.0 and earlier, objects/mention.json.php has no User::loginCheck() or admin gate. It only has an entry guard…
CVE-2018-25350Critical9.82026-05-23userSpice 4.3.24 contains a username enumeration vulnerability that allows unauthenticated attackers to discover valid usernames by sending POST requests to th…
CVE-2026-44306Medium5.32026-05-12Statamic is a Laravel and Git powered content management system (CMS). Prior to 5.73.21 and 6.15.0, responses from the forgot password forms hinted at whether…
CVE-2024-0391Medium5.32026-05-11The check user account lock states feature within the email OTP flow fails to validate user input, allowing an attacker to infer the existence of registered us…
CVE-2026-8242Low3.72026-05-10A vulnerability was found in Industrial Application Software IAS Canias ERP 8.03. The impacted element is the function doAction of the component Login RMI Inte…
CVE-2026-20195Medium5.32026-05-06A vulnerability in an identity management API endpoint of Cisco ISE could allow an unauthenticated, remote attacker to enumerate valid user accounts on an affe…
CVE-2026-34319Medium5.02026-04-21Vulnerability in the MySQL Shell product of Oracle MySQL (component: Shell: Core Client). Supported versions that are affected are 8.0.0-8.0.45, 8.4.0-8.4.8 a…
CVE-2026-24468Medium5.32026-04-20OpenAEV is an open source platform allowing organizations to plan, schedule and conduct cyber adversary simulation campaign and tests. Starting in version 1.11…
CVE-2026-40485Medium5.32026-04-18ChurchCRM is an open-source church management system. In versions prior to 7.2.0, the public API login endpoint (/api/public/user/login) returns distinguishabl…
CVE-2026-34264Medium6.52026-04-14During authorization checks in SAP Human Capital Management for SAP S/4HANA, the system returns specific messages. Due to this, an authenticated user with low…
CVE-2026-4113High7.22026-04-09An observable response discrepancy vulnerability in the SonicWall SMA1000 series appliances allows a remote attacker to enumerate SSL VPN user credentials.
CVE-2026-39851Medium4.32026-04-08Saleor is an e-commerce platform. From 2.10.0 to before 3.23.0a3, 3.22.47, 3.21.54, and 3.20.118, the requestEmailChange() mutation was revealing the existence…
CVE-2025-67807Medium4.72026-04-01The login mechanism of Sage DPW 2025_06_004 displays distinct responses for valid and invalid usernames, allowing enumeration of existing accounts in versions…
CVE-2025-67806Low3.72026-04-01The login mechanism of Sage DPW 2021_06_004 displays distinct responses for valid and invalid usernames, allowing enumeration of existing accounts in versions…
CVE-2025-37162026-03-30User enumeration in ESET Protect (on-prem) via Response Timing.
CVE-2026-33419High7.52026-03-24MinIO is a high-performance object storage system. Prior to RELEASE.2026-03-17T21-25-16Z, MinIO AIStor's STS (Security Token Service) AssumeRoleWithLDAPIdentit…
CVE-2026-33323Medium5.32026-03-24Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to versions 8.6.51 and 9.6.0-alpha.40, the Pages…
CVE-2026-33688Medium5.32026-03-23WWBN AVideo is an open source video platform. In versions up to and including 26.0, the password recovery endpoint at `objects/userRecoverPass.php` performs us…
CVE-2026-30876Medium5.32026-03-16Chamilo LMS is a learning management system. Prior to version 1.11.36, Chamilo is vulnerable to user enumeration with valid/invalid username. This issue has be…
CVE-2025-69243Medium5.32026-03-16Raytha CMS is vulnerable to User Enumeration in password reset functionality. Difference in messages could allow an attacker to determine if the login is valid…
CVE-2025-13460Medium5.32026-03-16IBM Aspera Console 3.3.0 through 3.4.8 could allow an attacker to enumerate usernames due to an observable response discrepancy.
CVE-2026-2859Medium4.32026-03-13Improper permission enforcement in Checkmk versions 2.4.0 before 2.4.0p23, 2.3.0 before 2.3.0p43, and 2.2.0 (EOL) allows unauthenticated users to enumerate exi…
CVE-2026-24097Medium4.32026-03-13Improper permission enforcement in Checkmk versions 2.4.0 before 2.4.0p23, 2.3.0 before 2.3.0p43, and 2.2.0 (EOL) allows authenticated users to enumerate exist…
CVE-2025-12455High7.52026-03-13Observable response discrepancy vulnerability in OpenText™ Vertica allows Password Brute Forcing.   The vulnerability could lead to Password Brute Forcing in V…
CVE-2026-4045Low3.72026-03-12A flaw has been found in projectsend up to r1945. This impacts an unknown function of the file includes/Classes/Auth.php. Executing a manipulation of the argum…
CVE-2026-31901Medium5.32026-03-11Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to 8.6.34 and 9.6.0-alpha.8, the email verificati…
CVE-2026-31888Medium5.32026-03-11Shopware is an open commerce platform. Prior to 6.7.8.1 and 6.6.10.15, the Store API login endpoint (POST /store-api/account/login) returns different error cod…
CVE-2026-28358Medium5.32026-03-02NocoDB is software for building databases as spreadsheets. Prior to version 0.301.3, the password forgot endpoint returned different responses for registered a…
CVE-2026-28288Medium5.32026-02-27Dify is an open-source LLM app development platform. Prior to 1.9.0, responses from the Dify API to existing and non-existent accounts differ, allowing an atta…
CVE-2026-25138Medium5.32026-02-25Rucio is a software framework that provides functionality to organize, manage, and access large volumes of scientific data using customizable policies. Prior t…
CVE-2025-62512Medium5.32026-02-24Piwigo is an open source photo gallery application for the web. In version 15.5.0 and likely earlier 15.x releases, the password reset functionality in Piwigo…
CVE-2026-27480Medium5.32026-02-21Static Web Server (SWS) is a production-ready web server suitable for static web files or assets. In versions 2.1.0 through 2.40.1, a timing-based username enu…
CVE-2026-26744Medium5.32026-02-19A user enumeration vulnerability exists in FormaLMS 4.1.18 and below in the password recovery functionality accessible via the /lostpwd endpoint. The applicati…
CVE-2019-25338Medium5.32026-02-12DokuWiki 2018-04-22b contains a username enumeration vulnerability in its password reset functionality that allows attackers to identify valid user accounts. A…
CVE-2026-25509Medium5.32026-02-03CI4MS is a CodeIgniter 4-based CMS skeleton that delivers a production-ready, modular architecture with RBAC authorization and theme support. Prior to version…
CVE-2026-24664Medium5.32026-02-03The Open eClass platform (formerly known as GUnet eClass) is a complete course management system. Prior to version 4.2, a username enumeration vulnerability al…
CVE-2026-24332Medium4.32026-01-22Discord through 2026-01-16 allows gathering information about whether a user's client state is Invisible (and not actually offline) because the response to a W…
CVE-2026-23511Medium5.32026-01-15ZITADEL is an open source identity management platform. Prior to 4.9.1 and 3.4.6, a user enumeration vulnerability has been discovered in Zitadel's login inter…
CVE-2026-21484Medium5.32026-01-03AnythingLLM is an application that turns pieces of content into context that any LLM can use as references during chatting. Prior to commit e287fab56089cf8fcea…
CVE-2025-69413Medium5.32026-01-01In Gitea before 1.25.2, /api/v1/user has different responses for failed authentication depending on whether a username exists.
CVE-2025-67874Medium6.52025-12-16ChurchCRM is an open-source church management system. Prior to version 6.5.0, the application echoes back plaintext passwords submitted by users in subsequent…
CVE-2025-62181Medium5.32025-12-10Pega Platform versions 7.1.0 through Infinity 25.1.0 are affected by a User Enumeration. This issue occurs during user authentication process, where a differe…
CVE-2025-67500Low3.72025-12-10Mastodon is a free, open-source social network server based on ActivityPub. Versions 4.2.27 and prior, 4.3.0-beta.1 through 4.3.14, 4.4.0-beta.1 through 4.4.9…
CVE-2021-477172025-12-09IntelliChoice eFORCE Software Suite 2.5.9 contains a username enumeration vulnerability that allows attackers to enumerate valid users by exploiting the 'ctl00…
CVE-2025-40806Medium5.32025-12-09A vulnerability has been identified in Gridscale X Prepay (All versions < V4.2.1). The affected application is vulnerable to user enumeration due to distinguis…
CVE-2025-65899Medium5.32025-12-04Kalmia CMS version 0.2.0 contains a user enumeration vulnerability in its authentication mechanism. The application returns different error messages for invali…
CVE-2025-12994Medium5.32025-12-04Medtronic CareLink Network allows an unauthenticated remote attacker to initiate a request for security questions to an API endpoint that could be used to dete…
CVE-2025-66307Medium6.52025-12-01This admin plugin for Grav is an HTML user interface that provides a convenient way to configure Grav and easily create and modify pages. Prior to 1.11.0-beta…
CVE-2025-59116Medium5.32025-11-18Windu CMS is vulnerable to User Enumeration. This issue occurs during logon, where a difference in messages could allow an attacker to determine if the login i…
CVE-2025-25236Medium5.32025-11-12Omnissa Workspace ONE UEM contains an observable response discrepancy vulnerability. A malicious actor may be able to enumerate sensitive information such as t…
CVE-2025-62236Medium5.32025-10-23The Frontier Airlines website has a publicly available endpoint that validates if an email addresses is associated with an account. An unauthenticated, remote…
CVE-2025-341552025-10-23Tibbo AggreGate Network Manager < 6.40.05 contains an observable response discrepancy in its login functionality. Authentication failure messages differ based…
CVE-2025-34255Medium5.32025-10-16D-Link Nuclias Connect firmware versions <= 1.3.1.4 contain an observable response discrepancy vulnerability. The application's 'Forgot Password' endpoint retu…
CVE-2025-34254Medium5.32025-10-16D-Link Nuclias Connect firmware versions <= 1.3.1.4 contain an observable response discrepancy vulnerability. The application's 'Login' endpoint returns distin…
CVE-2025-61907Medium6.52025-10-16Icinga 2 is an open source monitoring system. In Icinga 2 versions 2.4 through 2.15.0, filter expressions provided to the various /v1/objects endpoints could a…
CVE-2025-61789Medium5.32025-10-16Icinga DB Web provides a graphical interface for Icinga monitoring. Before 1.1.4 and 1.2.3, an authorized user with access to Icinga DB Web, can use a custom v…
CVE-2025-42903Medium4.32025-10-14A vulnerability in SAP Financial Service Claims Management RFC function ICL_USER_GET_NAME_AND_ADDRESS allows user enumeration and potential disclosure of perso…
CVE-2025-58586Medium5.32025-10-06For failed login attempts, the application returns different error messages depending on whether the login failed due to an incorrect password or a non-existin…
CVE-2025-56764Medium5.32025-09-29Trivision NC-227WF firmware 5.80 (build 20141010) login mechanism reveals whether a username exists or not by returning different error messages ("Unknown user…
CVE-2025-58442Medium5.32025-09-09Saleor is an e-commerce platform. Starting in version 3.21.0 and prior to version 3.21.16, requesting certain fields in the response of `accountRegister` may r…
CVE-2025-9824Medium5.92025-09-03ImpactThe attacker can validate if a user exists by checking the time login returns. This timing difference can be used to enumerate valid usernames, after whi…
CVE-2025-9109Low3.72025-08-18A security flaw has been discovered in Portabilis i-Diario up to 1.5.0. Affected by this vulnerability is an unknown functionality of the file /password/email…
CVE-2025-46390High7.52025-08-06CWE-204: Observable Response Discrepancy
CVE-2025-54834Medium5.32025-07-31OPEXUS FOIAXpress Public Access Link (PAL) version v11.1.0 allows an unauthenticated, remote attacker to query the /App/CreateRequest.aspx endpoint to check fo…