CVE-2026-34574
MEDIUMParse Server: Session field immutability bypass via falsy-value guard
Title source: cnaDescription
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.
References (5)
Core 5
Core References
X_Refsource_Confirm x_refsource_confirm
https://github.com/parse-community/parse-server/security/advisories/GHSA-f6j3-w9v3-cq22
X_Refsource_Misc x_refsource_misc
https://github.com/parse-community/parse-server/pull/10347
X_Refsource_Misc x_refsource_misc
https://github.com/parse-community/parse-server/pull/10348
X_Refsource_Misc x_refsource_misc
https://github.com/parse-community/parse-server/commit/90802969fc713b7bc9733d7255c7519a6ed75d21
X_Refsource_Misc x_refsource_misc
https://github.com/parse-community/parse-server/commit/ebccd7fe2708007e62f705ee1c820a6766178777
Scores
CVSS v3
5.4
EPSS
0.0021
EPSS Percentile
11.1%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
yes
Technical Impact
partial
Details
CWE
CWE-697
Status
published
Products (5)
npm/parse-server
9.0.0 - 9.7.0-alpha.14npm
parse-community/parse-server
< 8.6.69
parse-community/parse-server
>= 9.0.0, < 9.7.0-alpha.14
parseplatform/parse-server
9.7.0 alpha1 (13 CPE variants)
parseplatform/parse-server
< 8.6.69
Published
Mar 31, 2026
Tracked Since
Mar 31, 2026