Vulnerability in Parse-Community Parse-Server
CVE-2026-34574
Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to versions 8.6.69 and 9.7.0-alpha.14, an authenticated user can bypass the immutability guard on session fields (expiresAt, createdWith) by sending a null value in a PUT request to the session update endpoint. This allows nullifying the session expiry, making the session valid indefinitely and bypassing configured session length policies. This issue has been patched in versions 8.6.69 and 9.7.0-alpha.14.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N.
EPSS exploit prediction
EPSS: 0.003 (24.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 25th percentile — 24.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.003 · change: +0.001
Affected products
- Parse-Community Parse-Server — versions < 8.6.69, >= 9.0.0, < 9.7.0-alpha.14
- Parseplatform Parse-Server — versions 9.7.0
Weakness classification (CWE)
References
- github.com/parse-community/parse-server/security/advisories/GHSA-f6j3-w9v3-cq22 (Patch, Vendor Advisory)
- github.com/parse-community/parse-server/pull/10347 (Patch, Issue Tracking)
- github.com/parse-community/parse-server/pull/10348 (Patch, Issue Tracking)
- github.com/parse-community/parse-server/commit/90802969fc713b7bc9733d7255c7519a… (Patch)
- github.com/parse-community/parse-server/commit/ebccd7fe2708007e62f705ee1c820a67… (Patch)
Frequently asked questions
- What is CVE-2026-34574?
- CVE-2026-34574 is a medium-severity vulnerability in Parse-Community Parse-Server, classified under Incorrect Comparison. CVSS score: 5.4/10. Published 2026-03-31.
- How severe is CVE-2026-34574?
- Medium severity. CVSS v3 base score is 5.4 out of 10.