CVE catalog
CVE-2026-27138
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 dir
- Severity
- High · CVSS 7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 0.36% · Oct 25, 2026
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.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | golang-1.19 | bookworm | 1.19.8-2 | not affected |
| Go | stdlib | Not reported | 1.26.1 | fixed |
| Opensuse | steampipe | tumbleweed | 2.4.1-1.1 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | golang-1.19 | source | bookworm | Not affected | unimportant | Not reported | Not reported |
| Go | stdlib | Go | Not reported | 1.26.1 | Not reported | Not reported | Not reported |
| Opensuse | steampipe | rpm | tumbleweed | 2.4.1-1.1 | Not reported | OPENSUSE-SU-2026:10509-1 | Not reported |
OpenFactory catalog packages
[Debian 12 (Bookworm)]
- [golang-1.19]Not affected
Details (2)
1.19.8-2· all · bookwormNot affected
nvd · golang-1.19 · debian · bookworm
1.19.8-2· all · bookwormNot affected
nvd · golang-1.19 · debian · bookworm
- [golang-1.19-doc]Not affected
Source package: [golang-1.19]
Details (2)
1.19.8-2· all · bookwormNot affected
nvd · golang-1.19 · debian · bookworm
1.19.8-2· all · bookwormNot affected
nvd · golang-1.19 · debian · bookworm
- [golang-1.19-go]Not affected
Source package: [golang-1.19]
Details (2)
1.19.8-2· amd64 · bookwormNot affected
nvd · golang-1.19 · debian · bookworm
1.19.8-2· arm64 · bookwormNot affected
nvd · golang-1.19 · debian · bookworm
- [golang-1.19-src]Not affected
Source package: [golang-1.19]
Details (2)
1.19.8-2· all · bookwormNot affected
nvd · golang-1.19 · debian · bookworm
1.19.8-2· all · bookwormNot affected
nvd · golang-1.19 · debian · bookworm
[openSUSE Tumbleweed]
Observed:
References
- [https://ftp.suse.com/pub/projects/security/csaf/opensuse-su-2026_20537-1.json]
- [https://nvd.nist.gov/vuln/detail/CVE-2026-27138]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2026-27138]
- [https://osv.dev/vulnerability/openSUSE-SU-2026:10509-1]
- [https://pkg.go.dev/vuln/GO-2026-4600]
- [https://security-tracker.debian.org/tracker/CVE-2026-27138]
- [https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-27138.json]
- [https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-1730.json]
[CERT-Bund public advisories] · [Debian Security Tracker] · [FIRST EPSS] · [Go Vulnerability Database] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX]