{"id":"CVE-2026-17545","published":"2026-09-25T21:17:23.253","lastModified":"2026-09-29T21:27:41.130","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.","cvssScore":null,"cvssSeverity":null,"cvssVector":null,"cwes":["CWE-67"],"vendors":[],"products":[],"references":[{"url":"https://github.com/php/php-src/security/advisories/GHSA-9f67-6fw4-hpfp","tags":[]},{"url":"https://github.com/php/php-src/security/advisories/GHSA-9f67-6fw4-hpfp","tags":[]}],"exploitRefs":[{"url":"https://github.com/php/php-src/security/advisories/GHSA-9f67-6fw4-hpfp","tags":[]},{"url":"https://github.com/php/php-src/security/advisories/GHSA-9f67-6fw4-hpfp","tags":[]}],"hasPoc":true,"ai":null}