PT-2026-39450 · Php · Php

Aleksey Solovev + 1 · Published 2026-05-10 · Updated 2026-05-10 · CVE-2026-7568

Mitre

CVSS v4.0

6.3

Medium

Base vector

AV:N/AC:H/AT:P/PR:N/UI:N/VC:L/VI:L/VA:L/SC:L/SI:L/SA:L/RE:L/U:Amber

In PHP versions 8.2.* before 8.2.31, 8.3.* before 8.3.31, 8.4.* before 8.4.21, and 8.5.* before 8.5.6, the metaphone() function in ext/standard/metaphone.c uses a signed int variable to track the current position within the input string. If a string longer than 2,147,483,647 bytes is passed, a signed integer overflow occurs, resulting in undefined behavior. This can lead to an out-of-bounds read, causing a segmentation fault or access to unrelated memory, and may affect the availability of the PHP process.

Fix

Out of bounds Read

Integer Overflow

Weakness Enumeration

CWE-125

CWE-190

Related Identifiers

CVE-2026-7568

Affected Products

Php

References · 2

• https://nvd.nist.gov/vuln/detail/CVE-2026-7568 · Security Note
• https://github.com/php/php-src/security/advisories/GHSA-96wq-48vp-hh57 · Note