CVE-2023-31485 — GitLab::API::v4 through 0

GitLab::API::v4 through 0.26 does not verify TLS certificates when connecting to a GitLab server, enabling machine-in-the-middle attacks.

01What is this vulnerability?

GitLab::API::v4 through 0.26 does not verify TLS certificates when connecting to a GitLab server, enabling machine-in-the-middle attacks.

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: 2023-04-28T00:00:00.000Z
• Last modified: 2025-01-31T20:03:32.617Z

09References

• blog.hackeriet.no — https://blog.hackeriet.no/perl-http-tiny-insecure-tls-default-affects-cpan-modul…
• www.openwall.com — https://www.openwall.com/lists/oss-security/2023/04/18/14
• github.com — https://github.com/bluefeet/GitLab-API-v4/pull/57
• github.com — https://github.com/chansen/p5-http-tiny/pull/151
• www.openwall.com — http://www.openwall.com/lists/oss-security/2023/04/29/1
• www.openwall.com — http://www.openwall.com/lists/oss-security/2023/05/03/3
• www.openwall.com — http://www.openwall.com/lists/oss-security/2023/05/03/5
• www.openwall.com — http://www.openwall.com/lists/oss-security/2023/05/07/2