{"cve":"CVE-2007-1522","nvd":{"published":"2007-03-20T20:19:00.000","modified":"2026-06-16T22:37:45.270","status":"Modified","description":"Double free vulnerability in the session extension in PHP 5.2.0 and 5.2.1 allows context-dependent attackers to execute arbitrary code via illegal characters in a session identifier, which is rejected by an internal session storage module, which calls the session identifier generator with an improper environment, leading to code execution when the generator is interrupted, as demonstrated by triggering a memory limit violation or certain PHP errors.","cvss_v4":null,"cvss_v3":null,"cwes":[],"references":["http://secunia.com/advisories/24505","http://secunia.com/advisories/25056","http://www.novell.com/linux/security/advisories/2007_32_php.html","http://www.php-security.org/MOPB/MOPB-23-2007.html","http://www.securityfocus.com/bid/22971"],"products":["php:php"],"source":"nvd","synced_at":"2026-10-19T19:44:49.019236172+00:00"},"epss":{"cve":"CVE-2007-1522","score":0.06706,"percentile":0.93919,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}