Information disclosure in Parse-Community Parse-Server
CVE-2026-33627
Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to versions 8.6.61 and 9.6.0-alpha.55, an authenticated user calling GET /users/me receives unsanitized auth data, including sensitive credentials such as MFA TOTP secrets and recovery codes. The endpoint internally uses master-level authentication for the session query, and the master context leaks through to the user data, bypassing auth adapter sanitization. An attacker who obtains a user's session token can extract MFA secrets to generate valid TOTP codes indefinitely. This issue has been patched in versions 8.6.61 and 9.6.0-alpha.55.
Vulnerability class: Information Disclosure
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.005 (42.2th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 42nd percentile — 42.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.005 · change: +0.001
Affected products
- Parse-Community Parse-Server — versions < 8.6.61, >= 9.0.0, < 9.6.0-alpha.55
- Parseplatform Parse-Server — versions 9.6.0
Weakness classification (CWE)
References
- github.com/parse-community/parse-server/security/advisories/GHSA-37mj-c2wf-cx96 (Vendor Advisory)
- github.com/parse-community/parse-server/pull/10278 (Issue Tracking)
- github.com/parse-community/parse-server/pull/10279 (Issue Tracking)
- github.com/parse-community/parse-server/commit/5b8998e6866bcf75be7b5bb625e27d23… (Patch)
- github.com/parse-community/parse-server/commit/875cf10ac979bd60f70e7a0c534e2bc1… (Patch)
Frequently asked questions
- What is CVE-2026-33627?
- CVE-2026-33627 is a medium-severity vulnerability in Parse-Community Parse-Server, classified under Information Disclosure. CVSS score: 6.5/10. Published 2026-03-24.
- How severe is CVE-2026-33627?
- Medium severity. CVSS v3 base score is 6.5 out of 10.