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TI-2006-06966 Aliases CVE-2006-7226GHSA-pjwm-g353-8cr7

Perl-Compatible Regular Expression (PCRE) library before 6.7 does not properly calculate…

Priority LOW 23Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
— Not recorded in CVSS 2.0
Attack complexity
Medium
Impact type
—
Confidentiality · integrity · availability
None · None · Partial
Fix status
Fixed

Attack profile from CVSS 2.0 · NVD. Fix status from CNA and Red Hat.

Summary

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).

Why it matters now

EPSS 0.01604 75th percentileScored 2026-11-07
Fix Fixed Red Hat: 2 advisories

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 4

CPEVersionsRoleVendor
cpe:2.3:o:redhat:enterprise_linux_desktop:4.0:*:*:*:*:*:*:*4.0VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux:4.0:*:as:*:*:*:*:*4.0VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux:4.0:*:es:*:*:*:*:*4.0VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux:4.0:*:ws:*:*:*:*:*4.0VulnerableRed Hat
  • cpe:2.3:o:redhat:enterprise_linux_desktop:4.0:*:*:*:*:*:*:* Versions 4.0 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux:4.0:*:as:*:*:*:*:* Versions 4.0 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux:4.0:*:es:*:*:*:*:* Versions 4.0 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux:4.0:*:ws:*:*:*:*:* Versions 4.0 Vulnerable ·Red Hat

Remediation

Red Hat 2 advisories

  • RHSA-2007:1068 Released 2007-11-29 · Red Hat rating Important
    pcre security update
    • Red Hat Enterprise Linux AS version 4 pcre-4.5-4.el4_6.6, pcre-4.5-4.el4_6.6.i386, pcre-4.5-4.el4_6.6.ia64 +5
    • Red Hat Enterprise Linux Desktop version 4 pcre-4.5-4.el4_6.6, pcre-4.5-4.el4_6.6.i386, pcre-devel-4.5-4.el4_6.6 +1
    • Red Hat Enterprise Linux ES version 4 pcre-4.5-4.el4_6.6, pcre-4.5-4.el4_6.6.i386, pcre-4.5-4.el4_6.6.ia64 +3
    • Red Hat Enterprise Linux WS version 4 pcre-4.5-4.el4_6.6, pcre-4.5-4.el4_6.6.i386, pcre-4.5-4.el4_6.6.ia64 +3
  • RHSA-2007:1059 Released 2007-11-29 · Red Hat rating Important
    pcre security update
    • Red Hat Enterprise Linux (v. 5 server) pcre-6.6-2.el5_1.7, pcre-6.6-2.el5_1.7.i386, pcre-6.6-2.el5_1.7.ia64 +5
    • Red Hat Enterprise Linux Desktop (v. 5 client) pcre-6.6-2.el5_1.7, pcre-6.6-2.el5_1.7.i386
    • Red Hat Enterprise Linux Desktop Workstation (v. 5 client) pcre-6.6-2.el5_1.7, pcre-devel-6.6-2.el5_1.7, pcre-devel-6.6-2.el5_1.7.i386

Vendor assessments

Red Hat

Red Hat rating: Important. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Enterprise Linux (v. 5 server)Fixed RHSA-2007:1059
Red Hat Enterprise Linux AS version 4Fixed RHSA-2007:1068
Red Hat Enterprise Linux Desktop (v. 5 client)Fixed RHSA-2007:1059
Red Hat Enterprise Linux Desktop Workstation (v. 5 client)Fixed RHSA-2007:1059
Red Hat Enterprise Linux Desktop version 4Fixed RHSA-2007:1068
Red Hat Enterprise Linux ES version 4Fixed RHSA-2007:1068
Red Hat Enterprise Linux WS version 4Fixed RHSA-2007:1068

Timeline

  1. 2026-10-02 Threatist record created from CVE-2006-7226
  2. 2026-10-03 Alias added: GHSA-pjwm-g353-8cr7

References

Advisory 4

Other 4

  • TI-2019-08259 Underflow in PHP-FPM can lead to RCE KEVCVSS 3.1CRITICAL 9.8
  • TI-2018-10530 Code injection in [UNKNOWN] RichFaces KEVCVSS 3.1CRITICAL 9.8
  • TI-2014-05975 GNU Bash through 4.3 bash43-025 processes trailing strings after certain malformed… KEVCVSS 3.1CRITICAL 9.8
  • TI-2014-05157 GNU Bash through 4.3 processes trailing strings after function definitions in the values… KEVCVSS 3.1CRITICAL 9.8
  • TI-2025-23530 Sudo before 1.9.17p1 allows local users to obtain root access because /etc/nsswitch.conf… KEVCVSS 3.1CRITICAL 9.3
  • TI-2021-17490 mod_proxy SSRF KEVCVSS 3.1CRITICAL 9.0
See all 1955 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences