CVE-2020-13303

Severity: medium (CVSS 6.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2020-09-15 · updated 2026-06-17
Weakness: CWE-287

Description

A vulnerability was discovered in GitLab versions before 13.1.10, 13.2.8 and 13.3.4. Due to improper verification of permissions, an unauthorized user can access a private repository within a public project.

Affected products

GitLab: from 13.1.0 before 13.1.10; from 13.2.0 before 13.2.8; from 13.3.0 before 13.3.4 — fixed in 13.1.10, 13.2.8, 13.3.4

How to fix

Upgrade to a fixed version: GitLab 13.1.10, 13.2.8, 13.3.4. Check the vendor advisory for mitigations.

References

https://gitlab.com/gitlab-org/cves/-/blob/master/2020/CVE-2020-13303.json
https://gitlab.com/gitlab-org/gitlab/-/issues/238887
https://hackerone.com/reports/962231
https://gitlab.com/gitlab-org/cves/-/blob/master/2020/CVE-2020-13303.json
https://gitlab.com/gitlab-org/gitlab/-/issues/238887
https://hackerone.com/reports/962231

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