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CVE-2006-7226Perl-Compatible Regular Expression (PCRE) library before 6.7 does not properly calculate the compiled memory allocation for regular…
- 4.3MediumCVSS base score
- 1.6%Exploitation in 30 daysEPSS · top 24% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
Perl-Compatible Regular Expression (PCRE) library before 6.7 does not properly calculate the compiled memory allocation for regular expressions that involve a quantified "subpattern containing a named recursion or subroutine reference," which allows context-dependent attackers to cause a denial of service (error or crash).
Timeline
ID reserved
By redhat
- 20 days later
· 20 days later
Published
- 17 years later
· 17 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 2.0 | Medium4.3 | AV:N/AC:M/Au:N/C:N/I:N/A:P |
- EPSS (exploitation in 30 days)
- 1.6% · top 24% of all CVEs (12 Nov 2026)
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 4.3.
Affected products
n/a
- affected n/a
References
References12
- MDVSA-2008:030 (opens in a new tab)vendor-advisoryx_refsource_MANDRIVAx_transferred
- SUSE-SA:2008:004 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
- 28658 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- oval:org.mitre.oval:def:11545 (opens in a new tab)vdb-entrysignaturex_refsource_OVALx_transferred
- 26727 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
- http://support.avaya.com/elmodocs2/security/ASA-2007-505.htm (opens in a new tab)x_refsource_CONFIRMx_transferred
- RHSA-2007:1068 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- RHSA-2007:1059 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- 28041 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- https://bugzilla.redhat.com/show_bug.cgi?id=384781 (opens in a new tab)x_refsource_MISCx_transferred
- http://www.pcre.org/changelog.txt (opens in a new tab)x_refsource_CONFIRMx_transferred
- pcre-library-subpattern-dos(40020) (opens in a new tab)vdb-entryx_refsource_XFx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2006-7203 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2006-7226)Record last updated .