Vulnerability Description
On most platforms, Go uses the given system root certificates. However, in some narrower cases, the system trust stores may not be updated without further action. To defend against the narrower set of cases that may remain affected, a denylist was added in crypto/x509 to return an error when calling Verify with any of the known intermediate certificates that are no longer considered to be trustworthy.
CVSS Score
MEDIUM
Related Weaknesses (CWE)
References
- https://go.dev/cl/851047
- https://go.dev/issue/82345
- https://groups.google.com/g/golang-announce/c/66pojueaQek
- https://pkg.go.dev/vuln/GO-2026-6809
- http://www.openwall.com/lists/oss-security/2026/10/20/29
FAQ
What is CVE-2026-111943?
CVE-2026-111943 is a vulnerability with a CVSS score of 6.8 (MEDIUM). On most platforms, Go uses the given system root certificates. However, in some narrower cases, the system trust stores may not be updated without further action. To defend against the narrower set of...
How severe is CVE-2026-111943?
CVE-2026-111943 has been rated MEDIUM with a CVSS base score of 6.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-111943?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.