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Mattermost doesn't restrict role_updated websocket event broadcasts to members of the affected team or channel
Mattermost doesn't restrict role_updated websocket event broadcasts to members of the affected team or channel
Affected packages
- github.com/mattermost/mattermost-server
- github.com/mattermost/mattermost/server/v8
Exploit signal
- Known exploited (CISA KEV)
- No
- EPSS score
- —
- EPSS percentile
- —
EPSS is the probability a CVE is exploited in the wild; percentile is its rank among all CVEs.
Sources
- https://nvd.nist.gov/vuln/detail/CVE-2026-3433
- https://github.com/mattermost/mattermost/pull/35497
- https://github.com/mattermost/mattermost/pull/36256
- https://github.com/mattermost/mattermost/pull/36257
- https://github.com/mattermost/mattermost/pull/36341
- https://github.com/mattermost/mattermost/commit/0a0ab0d54d899d308bd1352cc577036917500318
- https://github.com/mattermost/mattermost/commit/7425c6817bf244f976c729f8a73cecac8039a1e1
- https://github.com/mattermost/mattermost/commit/9408b98025d7364d7dfe7cdb28fcd109b1b595a6
- https://github.com/mattermost/mattermost/commit/a30a331a29b9766d46716d4252056d7b74e66da0
- https://github.com/mattermost/mattermost
- https://github.com/mattermost/mattermost/releases/tag/v10.11.16
- https://github.com/mattermost/mattermost/releases/tag/v11.5.5
- https://github.com/mattermost/mattermost/releases/tag/v11.6.2
- https://github.com/mattermost/mattermost/releases/tag/v11.7.0
- https://mattermost.com/security-updates
Structured record: https://osv.dev/vulnerability/GHSA-rp4v-qc77-phm4
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