cve.bz

CVE-2026-24692

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 8.0.0-20260107142155-0481bd1fb045.

Mattermost versions 11.3.x <= 11.3.0, 11.2.x <= 11.2.2, 10.11.x <= 10.11.10 fail to properly enforce read permissions in search API endpoints which allows guest users without read permissions to access posts and files in channels via search API requests. Mattermost Advisory ID: MMSA-2025-00554

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-863
Published
Modified
Record from
the NVD, synced

Affected

Packages (OSV)

AdvisoryEcosystemPackageAffectedFixed in
GHSA-cwfj-642j-gfh4Gogithub.com/mattermost/mattermost/server/v8<8.0.0-20260107142155-0481bd1fb0458.0.0-20260107142155-0481bd1fb045
GHSA-cwfj-642j-gfh4Gogithub.com/mattermost/mattermost-server<5.3.2-0.20260107142155-0481bd1fb0455.3.2-0.20260107142155-0481bd1fb045
GHSA-cwfj-642j-gfh4Gogithub.com/mattermost/mattermost-server>=10.11.0-rc1 <10.11.1110.11.11
GHSA-cwfj-642j-gfh4Gogithub.com/mattermost/mattermost-server>=11.2.0-rc1 <11.2.311.2.3
GHSA-cwfj-642j-gfh4Gogithub.com/mattermost/mattermost-server>=11.3.0-rc1 <11.3.111.3.1
GO-2026-4745Gogithub.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-2026-4745Gogithub.com/mattermost/mattermost-server/v5all versionsno fix published
GO-2026-4745Gogithub.com/mattermost/mattermost-server/v6all versionsno fix published
GO-2026-4745Gogithub.com/mattermost/mattermost/server/v8<8.0.0-20260107142155-0481bd1fb0458.0.0-20260107142155-0481bd1fb045

References

Check your stackJSON