CVE-2026-10542
CVE CVE-2026-10542EUVD EUVD-2026-77366Published 2026-09-14T10:37:32.000ZLast changed 2026-09-14T11:19:45.000ZCVSS 5.0
What the advisory describes
Mattermost versions 11.9.x <= 11.9.0, 11.8.x <= 11.8.4, 11.7.x <= 11.7.7, 10.11.x <= 10.11.22 fail to validate channel action ownership which allows channel managers to update actions in other channels via the channel action update endpoint.. Mattermost Advisory ID: MMSA-2026-00692
Source: EUVD (ENISA), in the words of the advisory.
Products the advisory names
These come from the advisory itself, not from any check we performed.
- Mattermost — Mattermost 10.11.0 ≤10.11.22; 11.8.0 ≤11.8.4; 11.9.0 ≤11.9.0; 11.7.0 ≤11.7.7
The versions shown are the advisory's own. Patchlage compares no version numbers and derives no judgement from them — which version is installed is something a person has to look up.
Carried in the product catalogue
An estate covering these products can be recorded in Patchlage. An advisory about them appears in the next morning's situation report.
- Mattermost — Mattermost
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