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CWE

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CVE-2026-7258

Published: May 10, 2026

Modified: May 11, 2026

PUBLISHED

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, some functions, including urldecode(), pass signed char to ctype functions (like isxdigit()). On the systems with default signed char and optimized table-lookup ctype functions - such as NetBSD - this can lead to accessing array with negative offset, which can trigger a denial of service.

Vendor	Product	Versions
PHP Group	PHP	affected `8.2.* - < 8.2.31` affected `8.3.* - < 8.3.31` affected `8.4.* - < 8.4.21` affected `8.5.* - < 8.5.6`

Weaknesses (CWE)

References

https://github.com/php/php-src/security/advisories/GHSA-m8rr-4c36-8gq4

vendor-advisory

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