What is CVE-2020-13311?

CVE-2020-13311 is a medium-severity vulnerability in GitLab, classified under Use of Incorrectly-Resolved Name or Reference. CVSS score: 4.3/10. Published 2020-09-14.

How severe is CVE-2020-13311?

Medium severity. CVSS v3 base score is 4.3 out of 10.

Vulnerability in GitLab

CVE-2020-13311

A vulnerability was discovered in GitLab versions before 13.1.10, 13.2.8 and 13.3.4. Wiki was vulnerable to a parser attack that prohibits anyone from accessing the Wiki functionality through the user interface.

Published 2020-09-14 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L.

EPSS exploit prediction

EPSS: 0.015 (73.2th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 73rd percentile — 73.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.015 · newest: 0.015 · change: 0.000

Affected products

GitLab — versions >=1.0, <13.1.10, >=13.2, <13.2.8, >=13.3, <13.3.4

Weakness classification (CWE)

CWE-706 — Use of Incorrectly-Resolved Name or Reference

References

gitlab.com/gitlab-org/gitlab/-/issues/208682 (Vendor Advisory)
gitlab.com/gitlab-org/gitlab/-/issues/224496 (Broken Link)
gitlab.com/gitlab-org/cves/-/blob/master/2020/CVE-2020-13311.json (Vendor Advisory)

Frequently asked questions

What is CVE-2020-13311?: CVE-2020-13311 is a medium-severity vulnerability in GitLab, classified under Use of Incorrectly-Resolved Name or Reference. CVSS score: 4.3/10. Published 2020-09-14.
How severe is CVE-2020-13311?: Medium severity. CVSS v3 base score is 4.3 out of 10.