CVE-2018-12606

Severity: medium (CVSS 5.4 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.7% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2018-08-03 · updated 2026-06-17
Weakness: CWE-79

Description

An issue was discovered in GitLab Community Edition and Enterprise Edition before 10.7.6, 10.8.x before 10.8.5, and 11.x before 11.0.1. The wiki contains a persistent XSS issue due to a lack of output encoding affecting a specific markdown feature.

Affected products

GitLab: before 10.7.6; from 10.8.0 before 10.8.5; from 11.0.0 before 11.0.1 — fixed in 10.7.6, 10.8.5, 11.0.1

How to fix

Upgrade to a fixed version: GitLab 10.7.6, 10.8.5, 11.0.1. Check the vendor advisory for mitigations.

References

https://about.gitlab.com/2018/06/25/security-release-gitlab-11-dot-0-dot-1-released/
https://gitlab.com/gitlab-org/gitlab-ce/issues/46957
https://about.gitlab.com/2018/06/25/security-release-gitlab-11-dot-0-dot-1-released/
https://gitlab.com/gitlab-org/gitlab-ce/issues/46957

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