CVE-2026-6731
Fixed in a distro release EPSS <1%CVSS 6.0
X.509 name constraint bypass via the Subject Common Name when treated as a DNS-type name. A certificate whose Subject CN violates an issuing CA's DNS name constraints could be accepted.
Products: wolfssl
Distro releases
| Release | Package | Fixed in |
|---|---|---|
| Debian 12 | wolfssl | 5.5.4-2+deb12u3 |
| Debian 13 | wolfssl | 5.7.2-0.1+deb13u2 |
| Ubuntu 16.04 LTS | wolfssl | no fix |
| Ubuntu 18.04 LTS | wolfssl | no fix |
| Ubuntu 20.04 LTS | wolfssl | no fix |
| Ubuntu 22.04 LTS | wolfssl | no fix |
| Ubuntu 24.04 LTS | wolfssl | no fix |
| Ubuntu 25.10 | wolfssl | no fix |
| Ubuntu 26.04 LTS | wolfssl | no fix |
| Ubuntu 26.10 | wolfssl | no fix |