CVE-2020-10955 — GitLab EE/CE 11

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.

01What is this vulnerability?

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.

02Affected products

Vendor	Product	Versions
n	a / n/a	n/a

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2020-03-27T18:48:49.000Z
• Last modified: 2024-08-04T11:21:14.205Z

09References

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