{"cve":"CVE-2015-7816","nvd":{"published":"2015-11-16T19:59:05.707","modified":"2026-06-17T00:33:11.510","status":"Modified","description":"The DisplayTopKeywords function in plugins/Referrers/Controller.php in Piwik before 2.15.0 allows remote attackers to conduct PHP object injection attacks, conduct Server-Side Request Forgery (SSRF) attacks, and execute arbitrary PHP code via a crafted HTTP header.","cvss_v4":null,"cvss_v3":null,"cwes":[],"references":["http://karmainsecurity.com/KIS-2015-10","http://packetstormsecurity.com/files/134220/Piwik-2.14.3-PHP-Object-Injection.html","http://seclists.org/fulldisclosure/2015/Nov/15","http://www.securityfocus.com/archive/1/536839/100/0/threaded","https://piwik.org/changelog/piwik-2-15-0/"],"products":["matomo:matomo"],"source":"nvd","synced_at":"2026-10-19T20:37:45.466985407+00:00"},"epss":{"cve":"CVE-2015-7816","score":0.03931,"percentile":0.90376,"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."]}