Read the docs
TI-2009-04819 Aliases CVE-2009-5065GHSA-3mwg-gp5g-fv3q

Cross-site scripting (XSS) vulnerability in feedparser.py in Universal Feed Parser (aka…

Priority LOW 27CWE-79Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
— Not recorded in CVSS 2.0
Attack complexity
Medium
Impact type
Cross-site scripting
Confidentiality · integrity · availability
None · Partial · None
Fix status
Fixed

Attack profile from CVSS 2.0 · NVD. Fix status from CNA and GitHub. Impact type from CWE-79.

Summary

Cross-site scripting (XSS) vulnerability in feedparser.py in Universal Feed Parser (aka feedparser or python-feedparser) before 5.0 allows remote attackers to inject arbitrary web script or HTML via vectors involving nested CDATA stanzas.

Why it matters now

EPSS 0.0453 91st percentileScored 2026-11-07
Public exploit Yes 3 exploit referencesTagged by NVD
Fix Fixed feedparser (PyPI): 5.0

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
—feedparser (PyPI)before 5.05.0Patch availableGHSA-3mwg-gp5g-fv3q
  • — Vendor— Affected all versions Fixed in — No fix listed CNA
  • feedparser (PyPI) Vendor— Affected before 5.0 Fixed in 5.0 Patch available GHSA-3mwg-gp5g-fv3q

CPE configurations NVD · 9

CPEVersionsRoleVendor
cpe:2.3:a:mark_pilgrim:feedparser:*:*:*:*:*:*:*:*up to 4.1VulnerableMark Pilgrim
cpe:2.3:a:mark_pilgrim:feedparser:3.0:*:*:*:*:*:*:*3.0VulnerableMark Pilgrim
cpe:2.3:a:mark_pilgrim:feedparser:3.0.1:*:*:*:*:*:*:*3.0.1VulnerableMark Pilgrim
cpe:2.3:a:mark_pilgrim:feedparser:3.1:*:*:*:*:*:*:*3.1VulnerableMark Pilgrim
cpe:2.3:a:mark_pilgrim:feedparser:3.2:*:*:*:*:*:*:*3.2VulnerableMark Pilgrim
cpe:2.3:a:mark_pilgrim:feedparser:3.3:*:*:*:*:*:*:*3.3VulnerableMark Pilgrim
cpe:2.3:a:mark_pilgrim:feedparser:4.0:*:*:*:*:*:*:*4.0VulnerableMark Pilgrim
cpe:2.3:a:mark_pilgrim:feedparser:4.0.1:*:*:*:*:*:*:*4.0.1VulnerableMark Pilgrim
cpe:2.3:a:mark_pilgrim:feedparser:4.0.2:*:*:*:*:*:*:*4.0.2VulnerableMark Pilgrim
  • cpe:2.3:a:mark_pilgrim:feedparser:*:*:*:*:*:*:*:* Versions up to 4.1 Vulnerable ·Mark Pilgrim
  • cpe:2.3:a:mark_pilgrim:feedparser:3.0:*:*:*:*:*:*:* Versions 3.0 Vulnerable ·Mark Pilgrim
  • cpe:2.3:a:mark_pilgrim:feedparser:3.0.1:*:*:*:*:*:*:* Versions 3.0.1 Vulnerable ·Mark Pilgrim
  • cpe:2.3:a:mark_pilgrim:feedparser:3.1:*:*:*:*:*:*:* Versions 3.1 Vulnerable ·Mark Pilgrim
  • cpe:2.3:a:mark_pilgrim:feedparser:3.2:*:*:*:*:*:*:* Versions 3.2 Vulnerable ·Mark Pilgrim
  • cpe:2.3:a:mark_pilgrim:feedparser:3.3:*:*:*:*:*:*:* Versions 3.3 Vulnerable ·Mark Pilgrim
  • cpe:2.3:a:mark_pilgrim:feedparser:4.0:*:*:*:*:*:*:* Versions 4.0 Vulnerable ·Mark Pilgrim
  • cpe:2.3:a:mark_pilgrim:feedparser:4.0.1:*:*:*:*:*:*:* Versions 4.0.1 Vulnerable ·Mark Pilgrim
  • cpe:2.3:a:mark_pilgrim:feedparser:4.0.2:*:*:*:*:*:*:* Versions 4.0.2 Vulnerable ·Mark Pilgrim

Remediation

  • Fix · GHSA-3mwg-gp5g-fv3q feedparser (PyPI) Fixed in 5.0 Advisory →

Vendor assessments

Red Hat

Red Hat's page for this CVE →

Not affected: 1 product
  • Red Hat

Timeline

  1. 2026-10-02 Threatist record created from CVE-2009-5065
  2. 2026-10-03 Alias added: GHSA-3mwg-gp5g-fv3q

References

Exploit 3

Advisory 3

Other 6

  • TI-2011-01008 feedparser.py in Universal Feed Parser (aka feedparser or python-feedparser) before 5.0.1… CVSS 2.0MEDIUM 5.0
  • TI-2012-02535 Universal Feed Parser (aka feedparser or python-feedparser) before 5.1.2 allows remote… CVSS 2.0MEDIUM 5.0
  • TI-2011-01010 Cross-site scripting (XSS) vulnerability in feedparser.py in Universal Feed Parser (aka… CVSS 2.0MEDIUM 4.3
  • TI-2011-01009 Cross-site scripting (XSS) vulnerability in feedparser.py in Universal Feed Parser (aka… CVSS 2.0MEDIUM 4.3

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences