{"cve":"CVE-2011-1157","nvd":{"published":"2011-04-11T18:55:03.523","modified":"2026-06-16T23:28:50.410","status":"Modified","description":"Cross-site scripting (XSS) vulnerability in feedparser.py in Universal Feed Parser (aka feedparser or python-feedparser) 5.x before 5.0.1 allows remote attackers to inject arbitrary web script or HTML via malformed XML comments.","cvss_v4":null,"cvss_v3":null,"cwes":["CWE-79"],"references":["http://lists.opensuse.org/opensuse-updates/2011-04/msg00026.html","http://openwall.com/lists/oss-security/2011/03/14/18","http://openwall.com/lists/oss-security/2011/03/15/11","http://secunia.com/advisories/43730","http://secunia.com/advisories/44074"],"products":["mark_pilgrim:feedparser"],"source":"nvd","synced_at":"2026-10-19T19:58:50.521460154+00:00"},"epss":{"cve":"CVE-2011-1157","score":0.02464,"percentile":0.84476,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-2p78-8hh6-96xc","url":"https://osv.dev/vulnerability/GHSA-2p78-8hh6-96xc","summary":"feedparser Cross-site Scripting vulnerability","modified":"2024-09-20T17:25:31.971933Z","packages":[{"ecosystem":"PyPI","name":"feedparser","purl":"pkg:pypi/feedparser","ranges":[">=5.0 <5.0.1"],"fixed":["5.0.1"]}]},{"id":"PYSEC-2011-20","url":"https://osv.dev/vulnerability/PYSEC-2011-20","summary":"","modified":"2023-11-08T03:56:58.907561Z","packages":[{"ecosystem":"PyPI","name":"feedparser","purl":"pkg:pypi/feedparser","ranges":["<5.0.1"],"fixed":["5.0.1"]}]}],"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."]}