Debian/php8.4: critical 9.1
In PHP versions 8.4.* before 8.4.21 and 8.5.* before 8.5.6, when an encoding name containing an embedded NUL byte is passed to mb_convert_encoding() or related mbstring functions, the code incorrectly
Action: Upgrade php8.4 to 8.4.21-1 or later.
Affected
| introduced | fixed | last affected |
|---|---|---|
| 0 | 8.4.21-1 | - |
Fixed versions
| 8.4.21-1 |
Sources
- osv: DEBIAN-CVE-2026-6104#Debian:14/php8.4
- https://security-tracker.debian.org/tracker/CVE-2026-6104
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