CVE-2026-111943

medium

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.

References

https://pkg.go.dev/vuln/GO-2026-6809

https://groups.google.com/g/golang-announce/c/66pojueaQek

https://go.dev/issue/82345

https://go.dev/cl/851047

https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-106926

http://www.openwall.com/lists/oss-security/2026/10/20/29

Details

Source: Mitre, NVD

Published: 2026-10-21

Updated: 2026-10-21

Named Vulnerability: GO-2026-6809

Risk Information

CVSS v2

Base Score: 7.1

Vector: CVSS2#AV:N/AC:H/Au:N/C:C/I:C/A:N

Severity: High

CVSS v3

Base Score: 6.8

Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N

Severity: Medium

EPSS

EPSS: 0.00145