Distrust compromised intermediate certificates in crypto/x509
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.
CVE-2026-111943
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-111943
crypto/x509
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"vendor": "Go standard library",
"product": "crypto/x509",
"versions": [
{
"status": "affected",
"version": "0",
"lessThan": "1.26.10",
"versionType": "semver"
},
{
"status": "affected",
"version": "1.27.0-0",
"lessThan": "1.27.3",
"versionType": "semver"
}
],
"packageName": "crypto/x509",
"collectionURL": "https://pkg.go.dev",
"defaultStatus": "unaffected",
"programRoutines": [
{
"name": "Certificate.Verify"
}
]
}
]- Related CVEs
- CVE-2026-111943
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #45013 · Revision 1
- Added to Heist Feed
- Publisher date