Movim through 0.35.5 Authorization Bypass via Post::ajaxGetPost Cached Post Read

Advisories

Movim through 0.35.5 Authorization Bypass via Post::ajaxGetPost Cached Post Read

Severity: low
Date: 11/9/2026
Affecting: movim <= 0.35.5
CVE: CVE-2026-125379
CWE: CWE-639 Authorization Bypass Through User-Controlled Key
CVSS: 2.3
CVSS V4 Vector: CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
References: Patch Commit
https://github.com/movim/movim
https://github.com/movim/movim/blob/v0.35.5/app/Widgets/Post/Post.php#L126-L160
Credit: hieuPenguinnn, Timothée Jaussoin
Description: Movim through 0.35.5 contains an authorization bypass vulnerability in Post::ajaxGetPost that allows authenticated users to read restricted posts by supplying server, node and nodeid values. Attackers who know item identifiers can retrieve cached community or contact-only posts from the pod-wide cache before the XMPP authorization check runs.

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