CVE-2026-27138
unknown
CVSS v3
—
CVSS v2
—
VIR risk
—
Description
Certificate verification can panic when a certificate in the chain has an empty DNS name and another certificate in the chain has excluded name constraints. This can crash programs that are either directly verifying X.509 certificate chains, or those that use TLS.
Predictions
Exploit likelihood
20%
Patch ETA
—
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
Vendor advisory: suse — https://www.suse.com/security/cve/CVE-2026-27138.html
Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2026-27138
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| debian | bullseye | fixed | 0 |
| debian | bookworm | fixed | 0 |
| debian | trixie | fixed | 0 |
| debian | forky | fixed | 0 |
| debian | sid | fixed | 0 |
| sles | affected | |
Package impact
| Ecosystem | Package | Vulnerable | Fixed |
|---|---|---|---|
| Go | stdlib | >=1.26.0-0,<1.26.1 | 1.26.1 |
References
Verify integrity in audit chain (admin only). AS-IS.