cve.bz

CVE-2026-22545

3.5 lowEPSS 0.2%

Low (3.5) in mattermost mattermost server. EPSS 0.2% chance of exploitation in the next 30 days. Fixed in github.com/mattermost/mattermost/server/v8 8.0.0-20260127144908-ced9a56e3988.

Mattermost versions 10.11.x <= 10.11.10 fail to validate user's authentication method when processing account auth type switch which allows an authenticated attacker to change account password without confirmation via falsely claiming a different auth provider.. Mattermost Advisory ID: MMSA-2026-00583

Severity

CVSS 3.1

3.5 low
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N
EPSS
0.2% chance of exploitation in the next 30 days; higher than 4% of CVEs (scores of 2026-10-31)
CWE
CWE-863
Published
Modified
Record from
the NVD, synced

Affected

Packages (OSV)

AdvisoryEcosystemPackageAffectedFixed in
GHSA-rv67-7w2g-7976Gogithub.com/mattermost/mattermost/server/v8<8.0.0-20260127144908-ced9a56e39888.0.0-20260127144908-ced9a56e3988
GHSA-rv67-7w2g-7976Gogithub.com/mattermost/mattermost-server<5.3.2-0.20260127144908-ced9a56e39885.3.2-0.20260127144908-ced9a56e3988
GHSA-rv67-7w2g-7976Gogithub.com/mattermost/mattermost-server>=10.11.0-rc1 <10.11.1110.11.11
GHSA-rv67-7w2g-7976Gogithub.com/mattermost/mattermost-server>=11.2.0-rc1 <11.2.311.2.3
GHSA-rv67-7w2g-7976Gogithub.com/mattermost/mattermost-server>=11.3.0-rc1 <11.3.111.3.1
GO-2026-4786Gogithub.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-2026-4786Gogithub.com/mattermost/mattermost-server/v5all versionsno fix published
GO-2026-4786Gogithub.com/mattermost/mattermost-server/v6all versionsno fix published
GO-2026-4786Gogithub.com/mattermost/mattermost/server/v8<8.0.0-20260127144908-ced9a56e39888.0.0-20260127144908-ced9a56e3988

References

Check your stackJSON