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Medium 5.9Published Mar 6, 2026
CVE-2026-27138Certificate verification can panic when a certificate in the chain has an empty DNS name and another certificate in the chain has excluded name constraints.
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- 5.9 MEDIUM (v3.1, NVD)CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
- Weakness (CWE)
- CWE-295
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Not given
- NVD analysis
- Analyzed
- Record last updated
- Jun 17, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
golang go golang:go | 1.26.0 | NVD |
References
- https://go.dev/cl/752183mailing-list
- https://go.dev/issue/77953issue-tracking
- https://groups.google.com/g/golang-announce/c/EdhZqrQ98hkrelease-notes
- https://pkg.go.dev/vuln/GO-2026-4600vendor-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.