Mattermost Plugins versions <=11.3 11.0.3 11.2.2 10.10.11.0 fail to implement authorisation checks on comment block modifications, which allows an authorised attacker with editor permission to modify comments created by other board members. Mattermost Advisory ID: MMSA-2025-00559
Metrics
Affected Vendors & Products
References
| Link | Providers |
|---|---|
| https://mattermost.com/security-updates |
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History
Fri, 20 Mar 2026 18:45:00 +0000
| Type | Values Removed | Values Added |
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| First Time appeared |
Mattermost
Mattermost mattermost Server |
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| CPEs | cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:* | |
| Vendors & Products |
Mattermost
Mattermost mattermost Server |
Mon, 16 Mar 2026 14:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
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Mon, 16 Mar 2026 11:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | Mattermost Plugins versions <=11.3 11.0.3 11.2.2 10.10.11.0 fail to implement authorisation checks on comment block modifications, which allows an authorised attacker with editor permission to modify comments created by other board members. Mattermost Advisory ID: MMSA-2025-00559 | |
| Title | Missing authorization check allows unauthorized modification of other users' comments on a board | |
| Weaknesses | CWE-639 | |
| References |
| |
| Metrics |
cvssV3_1
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Status: PUBLISHED
Assigner: Mattermost
Published: 2026-03-16T11:16:32.720Z
Updated: 2026-03-16T13:49:57.924Z
Reserved: 2026-02-13T11:09:37.505Z
Link: CVE-2026-2461
Updated: 2026-03-16T13:44:17.926Z
Status : Analyzed
Published: 2026-03-16T14:19:29.753
Modified: 2026-03-20T18:30:35.217
Link: CVE-2026-2461
No data.