What is CVE-2020-26414?

CVE-2020-26414 is a medium-severity vulnerability in GitLab. CVSS score: 4.3/10. Published 2021-01-15.

How severe is CVE-2020-26414?

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

Vulnerability in GitLab

CVE-2020-26414

An issue has been discovered in GitLab affecting all versions starting from 12.4. The regex used for package names is written in a way that makes execution time have quadratic growth based on the length of the malicious input string.

Published 2021-01-15 · 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 (73.8th percentile), scored 2026-10-03.

Low probability of exploitation in the next 30 days, but still tracked. 74th percentile — 73.8% 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 >=12.4, <13.5.6, >=13.6.0, <13.6.4, >=13.7.0, <13.7.2

References

gitlab.com/gitlab-org/gitlab/-/issues/270199 (Broken Link)
gitlab.com/gitlab-org/cves/-/blob/master/2020/CVE-2020-26414.json (Third Party Advisory)

Frequently asked questions

What is CVE-2020-26414?: CVE-2020-26414 is a medium-severity vulnerability in GitLab. CVSS score: 4.3/10. Published 2021-01-15.
How severe is CVE-2020-26414?: Medium severity. CVSS v3 base score is 4.3 out of 10.