GHSA-9hh7-6558-qfp2

ghsaUSosv

Mattermost allows other users to determine when users had read channels via channel member objects

view advisory published 2025-11-18Licence: CC-BY-4.0

Mattermost versions 10.11.x <= 10.11.3, and 10.5.x <= 10.5.11 fail to enforce access permissions on the Agents plugin which allows other users to determine when users had read channels via channel member objects.

01

describes (1)

Related CVEs.

IDseverity exploitable
CVE-2025-55074USlow3.5OT elevated—
Mattermost versions 10.11.x <= 10.11.3, 10.5.x <= 10.5.11 fail to enforce access permissions on the Agents plugin which allows other users to determine when users had read channels…
02

references

External citations — patches, advisories, analysis.

scry

Advisories like this name the exposed products attackers go after on your perimeter. See what is exposed on your perimeter with a free passive scan.

Free scan