GO-2026-6482

vendorUSosv

Mattermost doesn't invalidate cached authentication state for active WebSocket connections during global session revocation in github.com/mattermost/mattermost-server

view advisory published 2026-09-28Licence: per source

Mattermost doesn't invalidate cached authentication state for active WebSocket connections during global session revocation in github.com/mattermost/mattermost-server

describes (1)

Related CVEs.

ID	severity	EPSS	exploitable	published
CVE-2026-9162US	—	0.33% (27th)	—	2026-06-22
Mattermost versions 11.7.x <= 11.7.0, 11.6.x <= 11.6.2, 11.5.x <= 11.5.5, 10.11.x <= 10.11.17 fail to invalidate cached authentication state for active WebSocket connections during…

references

External citations — patches, advisories, analysis.

https://github.com/advisories/GHSA-h998-hxxj-8q83ADVISORY
https://mattermost.com/security-updatesWEB
https://nvd.nist.gov/vuln/detail/CVE-2026-9162ADVISORY

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