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CVE-2026-7259

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, a mismatch between encoding lists in Oniguruma and mbfl leads to a NULL pointer dereference, resulting in a segmentation fault and denial of service. The vulnerability is exploitable when user-controlled input can influence the encoding passed to mb_regex_encoding().

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-wm6j-2649-pv75

vendor-advisory

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