cve.bz

CVE-2026-2463

4.3 mediumEPSS 0.2%

Medium (4.3) in mattermost mattermost server. EPSS 0.2% chance of exploitation in the next 30 days. Fixed in github.com/mattermost/mattermost/server/v8 8.0.0-20260105134819-cc427af41b2a.

Mattermost versions 11.3.x <= 11.3.0, 11.2.x <= 11.2.2, 10.11.x <= 10.11.10 fail to filter invite IDs based on user permissions, which allows regular users to bypass access control restrictions and register unauthorized accounts via leaked invite IDs during team creation.. Mattermost Advisory ID: MMSA-2025-00565

Severity

CVSS 3.1

4.3 medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
EPSS
0.2% chance of exploitation in the next 30 days; higher than 6% of CVEs (scores of 2026-10-31)
CWE
CWE-862
Published
Modified
Record from
the NVD, synced

Affected

Packages (OSV)

AdvisoryEcosystemPackageAffectedFixed in
GHSA-fx49-m253-27jjGogithub.com/mattermost/mattermost/server/v8<8.0.0-20260105134819-cc427af41b2a8.0.0-20260105134819-cc427af41b2a
GHSA-fx49-m253-27jjGogithub.com/mattermost/mattermost-server<5.3.2-0.20260105134819-cc427af41b2a5.3.2-0.20260105134819-cc427af41b2a
GHSA-fx49-m253-27jjGogithub.com/mattermost/mattermost-server>=10.11.0-rc1 <10.11.1110.11.11
GHSA-fx49-m253-27jjGogithub.com/mattermost/mattermost-server>=11.2.0-rc1 <11.2.311.2.3
GHSA-fx49-m253-27jjGogithub.com/mattermost/mattermost-server>=11.3.0-rc1 <11.3.111.3.1
GO-2026-4735Gogithub.com/mattermost/mattermost-server>=10.11.0-rc1+incompatible <10.11.11+incompatible
>=11.2.0-rc1+incompatible <11.2.3+incompatible
>=11.3.0-rc1+incompatible <11.3.1+incompatible		10.11.11+incompatible, 11.2.3+incompatible, 11.3.1+incompatible
GO-2026-4735Gogithub.com/mattermost/mattermost-server/v5all versionsno fix published
GO-2026-4735Gogithub.com/mattermost/mattermost-server/v6all versionsno fix published
GO-2026-4735Gogithub.com/mattermost/mattermost/server/v8<8.0.0-20260105134819-cc427af41b2a8.0.0-20260105134819-cc427af41b2a

References

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