CVE-2023-3950 — An information disclosure issue in GitLab EE affecting all versions from 16

An information disclosure issue in GitLab EE affecting all versions from 16.2 prior to 16.2.5, and 16.3 prior to 16.3.1 allowed other Group Owners to see the Public Key for a Google Cloud Logging audit event streaming destination, if configured. Owners can now only write the key,

01What is this vulnerability?

An information disclosure issue in GitLab EE affecting all versions from 16.2 prior to 16.2.5, and 16.3 prior to 16.3.1 allowed other Group Owners to see the Public Key for a Google Cloud Logging audit event streaming destination, if configured. Owners can now only write the key, not read it.

02Affected products

Vendor	Product	Versions
GitLab	GitLab	16.2, 16.3

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

Open the Sigma generator with a pre-filled prompt for this CVE to draft a starting detection in your stack of choice:

Open in Sigma generator →

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: 2023-09-01T10:30:46.990Z
• Last modified: 2025-11-20T04:09:08.266Z

09References

• gitlab.com — https://gitlab.com/gitlab-org/gitlab/-/issues/419675
• hackerone.com — https://hackerone.com/reports/2079154