Improper input validation in Red Hat Keycloak
CVE-2021-3754
A flaw was found in keycloak where an attacker is able to register himself with the username same as the email ID of any existing user. This may cause trouble in getting password recovery email in case the user forgets the password.
Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L.
EPSS exploit prediction
EPSS: 0.021 (81.4th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 81st percentile — 81.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.024 · newest: 0.021 · change: -0.002
Affected products
- Red Hat Keycloak
- Red Hat Single Sign-On — versions 7.0
- Keycloak — versions Not-Known
Weakness classification (CWE)
Public proof-of-concept exploits
References
- bugzilla.redhat.com/show_bug.cgi (Issue Tracking, Vendor Advisory)
- access.redhat.com/security/cve/CVE-2021-3754 (Vendor Advisory)
Frequently asked questions
- What is CVE-2021-3754?
- CVE-2021-3754 is a medium-severity vulnerability in Red Hat Keycloak, classified under Improper Input Validation. CVSS score: 5.3/10. Published 2022-08-26.
- How severe is CVE-2021-3754?
- Medium severity. CVSS v3 base score is 5.3 out of 10.
- Is CVE-2021-3754 known to be exploited?
- 4 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.