What’s Vulnerable › Vulnerabilities

CVE-2020-13355

• Severity: high (CVSS 8.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.7% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2020-11-19 · updated 2026-06-17
• Weakness: CWE-22

Description

An issue has been discovered in GitLab CE/EE affecting all versions starting from 8.14. A path traversal is found in LFS Upload that allows attacker to overwrite certain specific paths on the server. Affected versions are: >=8.14, <13.3.9,>=13.4, <13.4.5,>=13.5, <13.5.2.

Affected products

• GitLab: from 8.14.0 before 13.3.9; from 13.4.0 before 13.4.5; from 13.5.0 before 13.5.2 — fixed in 13.3.9, 13.4.5, 13.5.2

How to fix

Upgrade to a fixed version: GitLab 13.3.9, 13.4.5, 13.5.2. Check the vendor advisory for mitigations.

References

• https://gitlab.com/gitlab-org/cves/-/blob/master/2020/CVE-2020-13355.json
• https://gitlab.com/gitlab-org/gitlab/-/issues/255886
• https://hackerone.com/reports/990800
• https://gitlab.com/gitlab-org/cves/-/blob/master/2020/CVE-2020-13355.json
• https://gitlab.com/gitlab-org/gitlab/-/issues/255886
• https://hackerone.com/reports/990800

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