Signed integer overflow in metaphone()_CVE-2026-7568

6.3 / 10

MEDIUM

CVSS:4.0/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

Description

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.

Basic Information

ID CVE-2026-7568

Source php

Published May 10, 2026 at 03:42

Affected Product

Vendor PHP Group

Product PHP

Version 8.2.*

Affected Versions PHP Group PHP 8.2.*
PHP Group PHP 8.3.*
PHP Group PHP 8.4.*
PHP Group PHP 8.5.*

CWE Classification

CWE-190 CWE-125

References

github.com /php/php-src/security/advisories/GHSA-96wq-48vp-hh57

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    "published": "2026-05-10T03:42:36.433Z",
    "modified": "2026-05-10T03:42:36.433Z",
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