cve.bz

CVE-2017-18906

8.1 highEPSS 0.8%

An issue was discovered in Mattermost Server before 4.0.0, 3.10.2, and 3.9.2, when Single Sign-On OAuth2 is used. An attacker could claim somebody else's account.

Severity

CVSS 3.1

8.1 high
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
EPSS
0.8% chance of exploitation in the next 30 days; higher than 56% of CVEs (scores of 2026-10-31)
CWE
CWE-287
Published
Modified
Record from
the NVD, synced

Affected

Packages (OSV)

AdvisoryEcosystemPackageAffectedFixed in
GHSA-fpcr-4rr5-hpcpGogithub.com/mattermost/mattermost-server<3.9.2-0.20170714134023-b17fca0d5ee73.9.2-0.20170714134023-b17fca0d5ee7
GHSA-fpcr-4rr5-hpcpGogithub.com/mattermost/mattermost-server>=3.10.0 <3.10.23.10.2
GO-2026-4477Gogithub.com/mattermost/mattermost-server>=3.10.0+incompatible <3.10.2+incompatible3.10.2+incompatible

References

Check your stackJSON