High severity7.5NVD Advisory· Published Sep 25, 2026· Updated Oct 23, 2026
CVE-2026-17545
CVE-2026-17545
Description
On Windows, PHP's filesystem and stream APIs do not reject reserved device names such as CON, PRN, AUX, NUL, COM1 to COM9, LPT1 to LPT9, CONIN$ and CONOUT$ when they appear as a component of a path. An attacker-controlled filename therefore reaches CreateFileW() and opens a device instead of the regular file the application expected, which can block or hang the request and exhaust worker processes.
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Affected products
6- osv-coords4 versionspkg:bitnami/php-minpkg:rpm/opensuse/php8&distro=openSUSE%20Tumbleweedpkg:bitnami/phppkg:bitnami/libphp
>= 8.2.0, < 8.2.34+ 3 more
- (no CPE)range: >= 8.2.0, < 8.2.34
- (no CPE)range: < 8.5.11-1.1
- (no CPE)range: >= 8.2.0, < 8.2.34
- (no CPE)range: >= 8.2.0, < 8.2.34
Patches
Vulnerability mechanics
References
1- github.com/php/php-src/security/advisories/GHSA-9f67-6fw4-hpfpnvdVendor AdvisoryExploit
News mentions
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