cve.bz

CVE-2017-18879

6.1 mediumEPSS 0.7%

An issue was discovered in Mattermost Server before 4.3.0, 4.2.1, and 4.1.2. XSS could occur via the author_link field of a Slack attachment.

Severity

CVSS 3.1

6.1 medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
EPSS
0.7% chance of exploitation in the next 30 days; higher than 52% of CVEs (scores of 2026-10-31)
CWE
CWE-79
Published
Modified
Record from
the NVD, synced

Affected

Packages (OSV)

AdvisoryEcosystemPackageAffectedFixed in
GHSA-498j-wxww-j897Gogithub.com/mattermost/mattermost-server<4.1.24.1.2
GHSA-498j-wxww-j897Gogithub.com/mattermost/mattermost-server>=4.2.0 <4.2.14.2.1
GHSA-498j-wxww-j897Gogithub.com/mattermost/mattermost-server>=4.3.0-rc1 <4.3.04.3.0
GO-2025-4189Gogithub.com/mattermost/mattermost-server<4.1.2+incompatible
>=4.2.0+incompatible <4.2.1+incompatible
>=4.3.0-rc1+incompatible <4.3.0+incompatible		4.1.2+incompatible, 4.2.1+incompatible, 4.3.0+incompatible

References

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