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Medium · 5.3 CVE-2026-33527 BIT-parse-2026-33527EUVD-2026-14974GHSA-jc39-686j-wp6q

Parse Server: Session update endpoint allows overwriting server-generated session fields

Published Mar 24, 2026 · Updated Mar 24, 2026 · Assigned by GitHub_M

Description

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.

Affected products

VendorProductAffectedFixed
parse-community parse-server < 8.6.57, >= 9.0.0, < 9.6.0-alpha.48 —

Affected packages

EcosystemPackageAffectedFixedRecord
npm parse-server >= 9.0.0, < 9.6.0-alpha.48 9.6.0-alpha.48 GHSA-jc39-686j-wp6q
npm parse-server < 8.6.57 8.6.57 GHSA-jc39-686j-wp6q

References