What is CVE-2018-12607?

CVE-2018-12607 is a medium-severity vulnerability in GitLab, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2018-08-03.

How severe is CVE-2018-12607?

Medium severity. CVSS v3 base score is 5.4 out of 10.

XSS in GitLab

CVE-2018-12607

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 charts feature contained a persistent XSS issue due to a lack of output encoding.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2018-08-03 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.007 (52.2th percentile), scored 2026-10-03.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 52nd percentile — 52.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: 0.000

Affected products

GitLab

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

gitlab.com/gitlab-org/gitlab-ce/issues/45903 (Exploit, Patch, Issue Tracking, Vendor Advisory)
about.gitlab.com/2018/06/25/security-release-gitlab-11-dot-0-dot-1-released/ (Vendor Advisory)

Frequently asked questions

What is CVE-2018-12607?: CVE-2018-12607 is a medium-severity vulnerability in GitLab, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2018-08-03.
How severe is CVE-2018-12607?: Medium severity. CVSS v3 base score is 5.4 out of 10.