{"cve":"CVE-2009-3266","nvd":{"published":"2009-09-18T22:30:00.640","modified":"2026-06-16T23:11:16.050","status":"Modified","description":"Opera before 10.01 does not properly restrict HTML in a (1) RSS or (2) Atom feed, which allows remote attackers to conduct cross-site scripting (XSS) attacks, and conduct cross-zone scripting attacks involving the Feed Subscription Page to read feeds or create feed subscriptions, via a crafted feed, related to the rendering of the application/rss+xml content type as \"scripted content.\"","cvss_v4":null,"cvss_v3":null,"cwes":["CWE-79"],"references":["http://archives.neohapsis.com/archives/bugtraq/2009-10/0289.html","http://secunia.com/advisories/37182","http://securethoughts.com/2009/09/exploiting-chrome-and-operas-inbuilt-atomrss-reader-with-script-execution-and-more/","http://securethoughts.com/2009/10/hijacking-operas-native-page-using-malicious-rss-payloads/","http://www.opera.com/docs/changelogs/mac/1001/"],"products":["opera:opera_browser"],"source":"nvd","synced_at":"2026-10-19T19:54:26.868835795+00:00"},"epss":{"cve":"CVE-2009-3266","score":0.0268,"percentile":0.8582,"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."]}