Low severityNVD Advisory· Published Jun 11, 2025· Updated Jun 11, 2025
Mattermost Guest User Information Disclosure Vulnerability
CVE-2025-4128
Description
Mattermost versions 10.5.x <= 10.5.4, 9.11.x <= 9.11.13 fail to properly restrict API access to team information, allowing guest users to bypass permissions and view information about public teams they are not members of via a direct API call to /api/v4/teams/{team_id}.
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Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
github.com/mattermost/mattermost/server/v8Go | < 8.0.0-20250422131222-701ddc896a10 | 8.0.0-20250422131222-701ddc896a10 |
github.com/mattermost/mattermost-serverGo | >= 10.5.0, < 10.5.5 | 10.5.5 |
github.com/mattermost/mattermost-serverGo | >= 9.11.0, < 9.11.14 | 9.11.14 |
Affected products
4- ghsa-coords3 versionspkg:golang/github.com/mattermost/mattermost-serverpkg:golang/github.com/mattermost/mattermost/server/v8pkg:rpm/opensuse/govulncheck-vulndb&distro=openSUSE%20Tumbleweed
>= 10.5.0, < 10.5.5+ 2 more
- (no CPE)range: >= 10.5.0, < 10.5.5
- (no CPE)range: < 8.0.0-20250422131222-701ddc896a10
- (no CPE)range: < 0.0.20250612T141001-1.1
- Range: 10.5.0
Patches
Vulnerability mechanics
References
5- github.com/advisories/GHSA-jwhw-xf5v-qgxcghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2025-4128ghsaADVISORY
- github.com/mattermost/mattermost/commit/2138a5f2ca6f75e2b99f6a04ea569d0f680c4fabghsaWEB
- github.com/mattermost/mattermost/commit/701ddc896a107b13f457fbdbe229bce5019fc516ghsaWEB
- mattermost.com/security-updatesghsaWEB
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