Ubuntu 22.04 LTS / 24.04 LTS / 25.10 / 26.04 LTS : PHP vulnerabilities (USN-8336-1)

The remote Ubuntu 22.04 LTS / 24.04 LTS / 25.10 / 26.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-8336-1 advisory. Aleksey Solovev and Nikita Sveshnikov discovered that PHP improperly handled NUL bytes when preparing SQL queries in the...

USN-8336-1: PHP vulnerabilities

Aleksey Solovev and Nikita Sveshnikov discovered that PHP improperly handled NUL bytes when preparing SQL queries in the PDO Firebird driver. An attacker could possibly use this issue to perform SQL injection attacks. CVE-2025-14179 It was discovered that PHP incorrectly handled certain encoding...

USN-8336-1 php8.1, php8.3, php8.4, php8.5 vulnerabilities

Aleksey Solovev and Nikita Sveshnikov discovered that PHP improperly handled NUL bytes when preparing SQL queries in the PDO Firebird driver. An attacker could possibly use this issue to perform SQL injection attacks. CVE-2025-14179 It was discovered that PHP incorrectly handled certain encoding...

CVE-2026-6104

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...

MGASA-2026-0127 Updated php packages fix security vulnerabilities

FPM: Fixed GHSA-7qg2-v9fj-4mwv XSS within status endpoint. CVE-2026-6735 MBString: Fixed GHSA-wm6j-2649-pv75 Null pointer dereference in phpmbcheckencoding via mberegsearchinit. CVE-2026-7259 OpenSSL: Fix compatibility issues with OpenSSL 4.0. PDOFirebird: Fixed GHSA-w476-322c-wpvm SQL injection...

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...

BIT-PHP-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...

BIT-LIBPHP-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...

PT-2026-40278

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 assumes that when strncasecmp returns 0 it means the strings have the same length. This can lead to...

PT-2026-40303

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 assumes that when strncasecmp returns 0 it means the strings have the same length. This can lead to...

SUSE CVE-2026-6104

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

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...

UBUNTU-CVE-2026-6104

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

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...

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...

CVE-2026-6104

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

CVE-2026-6104 affects PHP 8.4.x before 8.4.21 and 8.5.x before 8.5.6. When an encoding name containing an embedded NUL byte is passed to mb_convert_encoding() or related mbstring functions, code assumes that strncasecmp() returning 0 guarantees equal length, enabling an out-of-bounds read of glob...

EUVD-2026-28979

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

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...