CVE-2026-33527
MEDIUMParse Server: Session update endpoint allows overwriting server-generated session fields
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 8.6.57 and 9.6.0-alpha.48, an authenticated user can overwrite server-generated session fields such as expiresAt and createdWith when updating their own session via the REST API. This allows bypassing the server's configured session lifetime policy, making a session effectively permanent. This issue has been patched in versions 8.6.57 and 9.6.0-alpha.48.
References (5)
Core 5
Core References
X_Refsource_Confirm x_refsource_confirm
https://github.com/parse-community/parse-server/security/advisories/GHSA-jc39-686j-wp6q
X_Refsource_Misc x_refsource_misc
https://github.com/parse-community/parse-server/pull/10263
X_Refsource_Misc x_refsource_misc
https://github.com/parse-community/parse-server/pull/10264
X_Refsource_Misc x_refsource_misc
https://github.com/parse-community/parse-server/commit/26b628c8fb3cc79ea955374769eebcff6f8a8a73
X_Refsource_Misc x_refsource_misc
https://github.com/parse-community/parse-server/commit/ea68fc0b22a6056c9675149469ff57817f7cf984
Scores
CVSS v3
4.3
EPSS
0.0026
EPSS Percentile
16.6%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
yes
Technical Impact
partial
Details
CWE
CWE-863
Status
published
Products (4)
npm/parse-server
9.0.0 - 9.6.0-alpha.48npm
parse-community/parse-server
< 8.6.57
parse-community/parse-server
>= 9.0.0, < 9.6.0-alpha.48
parseplatform/parse-server
9.6.0 alpha1 (47 CPE variants)
Published
Mar 24, 2026
Tracked Since
Mar 25, 2026