Mattermost versions 10.11.x <= 10.11.3, 10.5.x <= 10.5.11, 10.12.x <= 10.12.0 fail to validate the relationship between the post being updated and the MSTeams plugin OAuth flow which allows an attacker to edit arbitrary posts via a crafted MSTeams plugin OAuth redirect URL.
Metrics
Affected Vendors & Products
References
| Link | Providers |
|---|---|
| https://mattermost.com/security-updates |
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History
Wed, 19 Nov 2025 21:45:00 +0000
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| First Time appeared |
Mattermost mattermost Server
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| CPEs | cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:* | |
| Vendors & Products |
Mattermost mattermost Server
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Sat, 15 Nov 2025 21:30:00 +0000
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| First Time appeared |
Mattermost
Mattermost mattermost |
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| Vendors & Products |
Mattermost
Mattermost mattermost |
Fri, 14 Nov 2025 16:15:00 +0000
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| Metrics |
ssvc
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Fri, 14 Nov 2025 08:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | Mattermost versions 10.11.x <= 10.11.3, 10.5.x <= 10.5.11, 10.12.x <= 10.12.0 fail to validate the relationship between the post being updated and the MSTeams plugin OAuth flow which allows an attacker to edit arbitrary posts via a crafted MSTeams plugin OAuth redirect URL. | |
| Title | MS Teams plugin OAuth allows editing arbitrary posts | |
| Weaknesses | CWE-306 | |
| References |
| |
| Metrics |
cvssV3_1
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Status: PUBLISHED
Assigner: Mattermost
Published: 2025-11-14T08:03:16.922Z
Updated: 2025-11-14T15:46:58.129Z
Reserved: 2025-10-15T11:16:32.206Z
Link: CVE-2025-55073
Updated: 2025-11-14T15:46:53.785Z
Status : Analyzed
Published: 2025-11-14T08:15:45.687
Modified: 2025-11-19T21:44:28.477
Link: CVE-2025-55073
No data.