In PHP versions 8.1.* before 8.1.34, 8.2.* before 8.2.30, 8.3.* before 8.3.29, 8.4.* before 8.4.16, 8.5.* before 8.5.1 when using the PDO PostgreSQL driver with PDO::ATTR_EMULATE_PREPARES enabled, an invalid character sequence (such as \x99) in a prepared statement parameter may cause the quoting function PQescapeStringConn to return NULL, leading to a null pointer dereference in pdo_parse_params() function. This may lead to crashes (segmentation fault) and affect the availability of the target server.
Fix
Patch, vendor advisory and mitigation references on NVD 1
- https://github.com/php/php-src/security/advisories/GHSA-8xr5-qppj-gvwj Exploit, Vendor Advisory
Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.
Change history 1
- First seenCVSS 8.2 · phpNVD modified 2026-10-13 09:10
Affected (CPE criteria) 1
cpe:2.3:a:php:php:*:*:*:*:*:*:*:*
References 1
- https://github.com/php/php-src/security/advisories/GHSA-8xr5-qppj-gvwj Exploit, Vendor Advisory