Remediation guide
How to fix CVE-2026-111943 in Go apps and binaries: inventory affected software, review vendor updates and verify the applications you actually run.
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.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Go standard library crypto/x509
Default version status: unaffected
0 to < 1.26.10affected1.27.0-0 to < 1.27.3affected