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Mattermost: Mehrere Schwachstellen ermöglichen nicht spezifizierten Angriff
view advisory published 2026-04-19
Ein Angreifer kann mehrere Schwachstellen in Mattermost ausnutzen, um einen nicht näher spezifizierten Angriff durchzuführen.
01
describes (3)
Related CVEs.
| ID | severity | exploitable | ||
|---|---|---|---|---|
| CVE-2026-28735US | —OT elevated | — | ||
Mattermost versions 11.6.x <= 11.6.0, 11.5.x <= 11.5.3, 11.4.x <= 11.4.4, 10.11.x <= 10.11.14 fail to validate the OAuth token scope on the callback which allows an authenticated M… | ||||
| CVE-2026-4858US | critical9.9 | — | ||
Mattermost versions 11.6.x <= 11.6.0, 11.5.x <= 11.5.3, 11.4.x <= 11.4.4, 10.11.x <= 10.11.14 fail to check integration URL for path traversal which allows an malicious authenticat… | ||||
| CVE-2026-4055US | —OT elevated | — | ||
Mattermost versions 11.5.x <= 11.5.1 fail to validate team-level run_create permission against the target team when creating a playbook run which allows an authenticated team membe… | ||||
02
references
External citations — patches, advisories, analysis.
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