CVE-2020-10955

Severity: medium (CVSS 6.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.0% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2020-03-27 · updated 2026-06-17
Weakness: CWE-862

Description

GitLab EE/CE 11.1 through 12.9 is vulnerable to parameter tampering on an upload feature that allows an unauthorized user to read content available under specific folders.

Affected products

Debian Linux: 10.0
GitLab: from 11.1.0 before 12.9.1 — fixed in 12.9.1

How to fix

Upgrade to a fixed version: GitLab 12.9.1. Check the vendor advisory for mitigations.

References

https://about.gitlab.com/releases/2020/03/26/security-release-12-dot-9-dot-1-released/
https://about.gitlab.com/releases/categories/releases/
https://www.debian.org/security/2020/dsa-4691
https://about.gitlab.com/releases/2020/03/26/security-release-12-dot-9-dot-1-released/
https://about.gitlab.com/releases/categories/releases/
https://www.debian.org/security/2020/dsa-4691

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