cve.bz

CVE-2024-4198

2.7 lowEPSS 0.5%

Low (2.7) in mattermost mattermost server. EPSS 0.5% chance of exploitation in the next 30 days. Fixed in github.com/mattermost/mattermost-server 8.1.12, 8.1.12+incompatible, 9.5.3.

Mattermost versions 9.6.0, 9.5.x before 9.5.3, and 8.1.x before 8.1.12 fail to fully validate role changes which allows an attacker authenticated as team admin to demote users to guest via crafted HTTP requests.

Severity

CVSS 3.1

2.7 low
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:N
EPSS
0.5% chance of exploitation in the next 30 days; higher than 42% of CVEs (scores of 2026-10-31)
CWE
CWE-284
Published
Modified
Record from
the NVD, synced

Affected

Packages (OSV)

AdvisoryEcosystemPackageAffectedFixed in
GHSA-5qx9-9ffj-5r8fGogithub.com/mattermost/mattermost-server>=9.6.0-rc1 <9.6.19.6.1
GHSA-5qx9-9ffj-5r8fGogithub.com/mattermost/mattermost-server>=9.5.0 <9.5.39.5.3
GHSA-5qx9-9ffj-5r8fGogithub.com/mattermost/mattermost-server>=8.1.0 <8.1.128.1.12
GO-2024-2794Gogithub.com/mattermost/mattermost-server>=8.1.0+incompatible <8.1.12+incompatible
>=9.5.0+incompatible <9.5.3+incompatible
>=9.6.0-rc1+incompatible <9.6.1+incompatible
8.1.12+incompatible, 9.5.3+incompatible, 9.6.1+incompatible

References

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