CVE-2026-17543

Critical

Description

Improper escaping of backslashes in attacker-provided parameters would allow for trivial SQL injection in PHP versions from 8.2.* before 8.2.33, from 8.3.* before 8.3.33, from 8.4.* before 8.4.24, and from 8.5.* before 8.5.9.

SeverityCritical

CVSS9.8

Exploit probability—

Product

Php

PublishedJul 30, 2026

First seenJul 30, 2026

Weakness typeCWE-89SQL injection

How to fix

Update

php php8.2.33, 8.3.33, 8.4.24, 8.5.9 or later

Vendor advisories

github.com/php/php-src/security/advisories/GHSA-7qpv-r5mr-78m4

Affected products

Product	Affected versions	Fixed in
php php	8.2.0 ≤ v < 8.2.33, 8.3.0 ≤ v < 8.3.33, 8.4.0 ≤ v < 8.4.24, 8.5.0 ≤ v < 8.5.9	8.2.33, 8.3.33, 8.4.24, 8.5.9

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