{"id":44543,"date":"2026-04-12T03:49:53","date_gmt":"2026-04-12T03:49:53","guid":{"rendered":"http:\/\/localhost\/?p=44543"},"modified":"2026-04-12T03:49:53","modified_gmt":"2026-04-12T03:49:53","slug":"parse-server-session-field-immutability-bypass-via-falsy-value-guard","status":"publish","type":"post","link":"https:\/\/zero.redgem.net\/?p=44543","title":{"rendered":"Parse Server: Session field immutability bypass via falsy-value guard_CVE-2026-34574"},"content":{"rendered":"<p>{&#8220;lastseen&#8221;:&#8221;&#8221;,&#8221;description&#8221;:&#8221;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. 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