{"cve":"CVE-2015-4518","nvd":{"published":"2015-11-05T05:59:04.570","modified":"2026-06-17T00:27:27.520","status":"Modified","description":"The Reader View implementation in Mozilla Firefox before 42.0 has an improper whitelist, which makes it easier for remote attackers to bypass the Content Security Policy (CSP) protection mechanism and conduct cross-site scripting (XSS) attacks via vectors involving SVG animations and the about:reader URL.","cvss_v4":null,"cvss_v3":null,"cwes":["CWE-79"],"references":["http://lists.opensuse.org/opensuse-security-announce/2015-11/msg00015.html","http://www.mozilla.org/security/announce/2015/mfsa2015-118.html","http://www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.html","http://www.securitytracker.com/id/1034069","http://www.ubuntu.com/usn/USN-2785-1"],"products":["mozilla:firefox"],"source":"nvd","synced_at":"2026-10-19T20:37:45.466985407+00:00"},"epss":{"cve":"CVE-2015-4518","score":0.01968,"percentile":0.80386,"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."]}