CVE-2026-17544

PHP · Published July 30, 2026

9.8

CVSS v3.1

CRITICAL

Patch availableGet patch

Description

Attacker-provided inputs to bccomp() could lead to an out-of-bounds write with stack and heap corruption in PHP versions from 8.4.* before 8.4.24 and from 8.5.* before 8.5.9.

Affected Products

PHP < 8.4.24
PHP < 8.5.9

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H