CVE-2025-55074
Unknown Unknown - Not Provided
BaseFortify

Publication date: 2025-11-18

Last updated on: 2025-11-25

Assigner: Mattermost, Inc.

Description
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 via channel member objects
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Meta Information
Published
2025-11-18
Last Modified
2025-11-25
Generated
2026-06-16
AI Q&A
2025-11-18
EPSS Evaluated
2026-06-15
NVD
CVE-2025-55074
Affected Vendors & Products
Showing 2 associated CPEs
Vendor Product Version / Range
mattermost mattermost_server From 10.5.0 (inc) to 10.5.12 (exc)
mattermost mattermost_server From 10.11.0 (inc) to 10.11.4 (exc)
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-NVD-CWE-noinfo
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Executive Summary

This vulnerability exists in Mattermost versions 10.11.x up to 10.11.3 and 10.5.x up to 10.5.11, where the software fails to enforce access permissions on the Agents plugin. This flaw allows users to determine when other users have read channels by accessing channel member objects, which should normally be restricted.

Impact Analysis

The vulnerability can impact you by allowing unauthorized users to gain information about when other users have read certain channels. This could lead to privacy concerns or information disclosure about user activity within the platform, although it does not allow modification or deletion of data.

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