Debian/php8.4: medium 4.3
PHP's OpenSSL stream peer verification checks the certificate's subjectAltName entries first and, whenever no entry matches, falls back to the Common Name. RFC 6125 requires the CN to be ignored once
Action: Upgrade php8.4 to 8.4.26-1~deb13u1 or later.
Affected
| introduced | fixed | last affected |
|---|---|---|
| 0 | 8.4.26-1~deb13u1 | - |
Fixed versions
| 8.4.26-1~deb13u1 |
Sources
- osv: DEBIAN-CVE-2026-91769#Debian:13/php8.4
- https://security-tracker.debian.org/tracker/CVE-2026-91769
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