CVE-2020-13347

Severity: critical (CVSS 9.1 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 2.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2020-10-07 · updated 2026-06-17
Weakness: CWE-22

Description

A command injection vulnerability was discovered in Gitlab runner versions prior to 13.2.4, 13.3.2 and 13.4.1. When the runner is configured on a Windows system with a docker executor, which allows the attacker to run arbitrary commands on Windows host, via DOCKER_AUTH_CONFIG build variable.

Affected products

GitLab: from 12.0.0 before 13.2.4; from 13.3.0 before 13.3.2; from 13.4.0 before 13.4.1 — fixed in 13.2.4, 13.3.2, 13.4.1

How to fix

Upgrade to a fixed version: GitLab 13.2.4, 13.3.2, 13.4.1. Check the vendor advisory for mitigations.

References

https://gitlab.com/gitlab-org/cves/-/blob/master/2020/CVE-2020-13347.json
https://gitlab.com/gitlab-org/gitlab-runner/-/issues/26725
https://hackerone.com/reports/955016
https://gitlab.com/gitlab-org/cves/-/blob/master/2020/CVE-2020-13347.json
https://gitlab.com/gitlab-org/gitlab-runner/-/issues/26725
https://hackerone.com/reports/955016

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