{"cve":"CVE-2020-5227","nvd":{"published":"2020-01-28T23:15:12.670","modified":"2026-06-17T03:21:03.923","status":"Modified","description":"Feedgen (python feedgen) before 0.9.0 is susceptible to XML Denial of Service attacks. The *feedgen* library allows supplying XML as content for some of the available fields. This XML will be parsed and integrated into the existing XML tree. During this process, feedgen is vulnerable to XML Denial of Service Attacks (e.g. XML Bomb). This becomes a concern in particular if feedgen is used to include content from untrused sources and if XML (including XHTML) is directly included instead of providing plain tex content only. This problem has been fixed in feedgen 0.9.0 which disallows XML entity expansion and external resources.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":7.5},"cwes":["CWE-776"],"references":["https://docs.microsoft.com/en-us/archive/msdn-magazine/2009/november/xml-denial-of-service-attacks-and-defenses","https://github.com/lkiesow/python-feedgen/commit/f57a01b20fa4aaaeccfa417f28e66b4084b9d0cf","https://github.com/lkiesow/python-feedgen/security/advisories/GHSA-g8q7-xv52-hf9f","https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/T6I5ENUYGFNMIH6ZQ62FZ6VU2WD3SIOI/","https://docs.microsoft.com/en-us/archive/msdn-magazine/2009/november/xml-denial-of-service-attacks-and-defenses"],"products":["feedgen_project:feedgen"],"source":"nvd","synced_at":"2026-10-19T21:01:01.339895972+00:00"},"epss":{"cve":"CVE-2020-5227","score":0.02182,"percentile":0.82374,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-g8q7-xv52-hf9f","url":"https://osv.dev/vulnerability/GHSA-g8q7-xv52-hf9f","summary":"Feedgen Vulnerable to XML Denial of Service Attacks","modified":"2026-07-08T06:28:28.386064743Z","packages":[{"ecosystem":"PyPI","name":"feedgen","purl":"pkg:pypi/feedgen","ranges":["<0.9.0"],"fixed":["0.9.0"]}]},{"id":"PYSEC-2020-231","url":"https://osv.dev/vulnerability/PYSEC-2020-231","summary":"","modified":"2023-11-08T04:03:51.987534Z","packages":[{"ecosystem":"PyPI","name":"feedgen","purl":"pkg:pypi/feedgen","ranges":["<0.9.0"],"fixed":["0.9.0"]}]}],"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."]}