CVE-2026-7568

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.

CVSS v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/php/php-src/security/advisories/GHSA-96wq-48vp-hh57	Vendor Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:php:php::::::::
	cpe:2.3:a:php:php::::::::
	cpe:2.3:a:php:php::::::::
	cpe:2.3:a:php:php::::::::

History

12 May 2026, 17:38

Type	Values Removed	Values Added
References	~~() https://github.com/php/php-src/security/advisories/GHSA-96wq-48vp-hh57 -~~	() https://github.com/php/php-src/security/advisories/GHSA-96wq-48vp-hh57 - Vendor Advisory
First Time		Php Php php
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : unknown v3 : 7.5
CPE		cpe:2.3:a:php:php::::::::

10 May 2026, 05:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-05-10 05:16

Updated : 2026-05-12 17:38

NVD link : CVE-2026-7568

Mitre link : CVE-2026-7568

CVE.ORG link : CVE-2026-7568

JSON object : View

Products Affected

php

php

CWE

CWE-125

Out-of-bounds Read

CWE-190

Integer Overflow or Wraparound

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