php: global buffer over-read in mb_convert_encoding() with attacker-supplied encoding

A flaw was found in PHP. When an encoding name containing an embedded NUL byte is passed to mbconvertencoding or related mbstring functions, an out-of-bounds read of only 1 byte can occur due to the incorrect processing of string lengths. This issue can cause a denial of service or limited...

Astra Linux – Vulnerability in libxml2

The GNOME project’s libxml2 v2.9.10 has a global buffer over-read vulnerability in the xmlEncodeEntitiesInternal function within libxml2/entities.c. This issue has been fixed in the commit numbered 50f06b3e...

BIT-PHP-MIN-2026-6104 Global buffer over-read in mb_convert_encoding() with attacker-supplied encoding

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 mbconvertencoding or related mbstring functions, the code incorrectly assumes that when strncasecmp returns 0 it means the strings have the same length. This can lead to...

CVE-2026-6104 Global buffer over-read in mb_convert_encoding() with attacker-supplied encoding

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 mbconvertencoding or related mbstring functions, the code incorrectly assumes that when strncasecmp returns 0 it means the strings have the same length. This can lead to...