Mattermost versions 11.0.x <= 11.0.2, 10.12.x <= 10.12.1, 10.11.x <= 10.11.4, 10.5.x <= 10.5.12 fail to to verify that the token used during the code exchange originates from the same authentication flow, which allows an authenticated user …
Exact source revision recorded 2 Nov 2026 23:59:35 UTC. It does not establish the source's current position. Latest evidence.
euvd · EUVD-2025-199833
PublishedEUVD source date text has no stated timezone and is retained without inventing a UTC instant. Related bulletin membership is not an alias, common cause or applicability claim. A missing vector with a zero score is treated as unrated. Complete vendor/product and underlying source evidence remains in the original JSON.
Original publisher date fields
datePublished: Nov 27, 2025, 5:47:04 PM
dateUpdated: Feb 26, 2026, 4:07:25 PM
1 related source bulletins · separate from aliases
NCSC-2025-0378: Kwetsbaarheden verholpen in Mattermost
CVE-2025-12421 · CVE-2025-12419
No normalized affected-package data is projected for this source revision. The original publisher record may contain additional product and version evidence; this does not establish that a package is unaffected.
Original source record · Cite this exact observation · Complete original publisher JSON