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TI-2015-02051 Aliases CVE-2015-2326GHSA-m793-2mj8-wj8q

The pcre_compile2 function in PCRE before 8.37 allows context-dependent attackers to…

Priority LOW 28CWE-125Published · Updated

Key facts

Attack vector
Local
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
Fixed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-125 and the CVSS impact.

Summary

The pcre_compile2 function in PCRE before 8.37 allows context-dependent attackers to compile incorrect code and cause a denial of service (out-of-bounds read) via regular expression with a group containing both a forward referencing subroutine call and a recursive back reference, as demonstrated by "((?+1)(\1))/".

Why it matters now

EPSS 0.01592 75th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed Red Hat: 1 advisory

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 · 5

CPEVersionsRoleVendor
cpe:2.3:a:pcre:pcre:*:*:*:*:*:*:*:*before 8.37VulnerablePCRE
cpe:2.3:o:opensuse:opensuse:13.1:*:*:*:*:*:*:*13.1VulnerableopenSUSE
cpe:2.3:o:opensuse:opensuse:13.2:*:*:*:*:*:*:*13.2VulnerableopenSUSE
cpe:2.3:a:mariadb:mariadb:*:*:*:*:*:*:*:*10.0.0 to before 10.0.18VulnerableMariaDB
cpe:2.3:a:php:php:*:*:*:*:*:*:*:*5.4.0 to before 5.4.41; 5.5.0 to before 5.5.26; 5.6.0 to before 5.6.9VulnerablePHP
  • cpe:2.3:a:pcre:pcre:*:*:*:*:*:*:*:* Versions before 8.37 Vulnerable ·PCRE
  • cpe:2.3:o:opensuse:opensuse:13.1:*:*:*:*:*:*:* Versions 13.1 Vulnerable ·openSUSE
  • cpe:2.3:o:opensuse:opensuse:13.2:*:*:*:*:*:*:* Versions 13.2 Vulnerable ·openSUSE
  • cpe:2.3:a:mariadb:mariadb:*:*:*:*:*:*:*:* Versions 10.0.0 to before 10.0.18 Vulnerable ·MariaDB
  • cpe:2.3:a:php:php:*:*:*:*:*:*:*:* Versions 5.4.0 to before 5.4.41; 5.5.0 to before 5.5.26; 5.6.0 to before 5.6.9 Vulnerable ·PHP

Remediation

Red Hat 1 advisory

  • RHSA-2016:2750 Released 2016-11-15 · Red Hat rating Moderate
    rh-php56 security, bug fix, and enhancement update
    • Red Hat Software Collections for Red Hat Enterprise Linux Server (v. 6) rh-php56-2.3-1.el6, rh-php56-php-5.6.25-1.el6, rh-php56-php-bcmath-5.6.25-1.el6 +30
    • Red Hat Software Collections for Red Hat Enterprise Linux Server (v. 7) rh-php56-2.3-1.el7, rh-php56-php-5.6.25-1.el7, rh-php56-php-bcmath-5.6.25-1.el7 +28
    • Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 6.7) rh-php56-2.3-1.el6, rh-php56-php-5.6.25-1.el6, rh-php56-php-bcmath-5.6.25-1.el6 +30
    • Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.2) rh-php56-2.3-1.el7, rh-php56-php-5.6.25-1.el7, rh-php56-php-bcmath-5.6.25-1.el7 +28
    • Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.3) rh-php56-2.3-1.el7, rh-php56-php-5.6.25-1.el7, rh-php56-php-bcmath-5.6.25-1.el7 +28
    • Red Hat Software Collections for Red Hat Enterprise Linux Workstation (v. 6) rh-php56-2.3-1.el6, rh-php56-php-5.6.25-1.el6, rh-php56-php-bcmath-5.6.25-1.el6 +30
    • Red Hat Software Collections for Red Hat Enterprise Linux Workstation (v. 7) rh-php56-2.3-1.el7, rh-php56-php-5.6.25-1.el7, rh-php56-php-bcmath-5.6.25-1.el7 +28

Vendor assessments

Red Hat

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

ProductStatusPlan or fix
Red Hat Software Collections for Red Hat Enterprise Linux Server (v. 6)Fixed RHSA-2016:2750
Red Hat Software Collections for Red Hat Enterprise Linux Server (v. 7)Fixed RHSA-2016:2750
Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 6.7)Fixed RHSA-2016:2750
Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.2)Fixed RHSA-2016:2750
Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.3)Fixed RHSA-2016:2750
Red Hat Software Collections for Red Hat Enterprise Linux Workstation (v. 6)Fixed RHSA-2016:2750
Red Hat Software Collections for Red Hat Enterprise Linux Workstation (v. 7)Fixed RHSA-2016:2750
Not affected: 4 products
  • Red Hat Enterprise Linux 5
  • Red Hat Enterprise Linux 6
  • Red Hat Enterprise Linux 7
  • Red Hat Software Collections

Timeline

  1. 2026-10-02 Threatist record created from CVE-2015-2326
  2. 2026-10-03 Alias added: GHSA-m793-2mj8-wj8q

References

Exploit 1

Advisory 3

Sources

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