{"cve":"CVE-2016-2539","nvd":{"published":"2017-02-07T15:59:00.257","modified":"2026-06-17T00:44:15.090","status":"Modified","description":"Cross-site request forgery (CSRF) vulnerability in install_modules.php in ATutor before 2.2.2 allows remote attackers to hijack the authentication of users for requests that upload arbitrary files and execute arbitrary PHP code via vectors involving a crafted zip file.","cvss_v4":null,"cvss_v3":{"version":"3.0","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","score":8.8},"cwes":["CWE-352"],"references":["https://github.com/atutor/ATutor/commit/bfc6c80c6c217c5515172f3cc949e13dfa1a92ac","https://packetstormsecurity.com/files/136109/ATutor-LMS-2.2.1-CSRF-Remote-Code-Execution.html","https://www.exploit-db.com/exploits/39524/","https://github.com/atutor/ATutor/commit/bfc6c80c6c217c5515172f3cc949e13dfa1a92ac","https://packetstormsecurity.com/files/136109/ATutor-LMS-2.2.1-CSRF-Remote-Code-Execution.html"],"products":["atutor:atutor"],"source":"nvd","synced_at":"2026-10-19T20:41:54.846948762+00:00"},"epss":{"cve":"CVE-2016-2539","score":0.04254,"percentile":0.91057,"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."]}