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Fencer Vulns
medium 6.5

CVE-2026-89158 json

PCRE2 before 10.48, on 32-bit platforms, has a pcre2_compile_32 integer overflow and resultant out-of-bounds write.

published 2026-09-11 59 d ago modified 2026-09-16 53 d ago also EUVD-2026-75944

cvss
6.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.2%
EPSS 0.2% chance of exploitation in 30 days, percentile 16%
public exploits
0
none known

Summary

PCRE2 before 10.48, on 32-bit platforms, has a pcre2_compile_32 integer overflow and resultant out-of-bounds write.

Patch / fix

  • PCRE PCRE2 10.48
  • pcre2 Debian 12 10.42-1+deb12u1
  • pcre2 Debian 13 10.46-1~deb13u2
  • pcre2 Debian 14 10.48-1

debian advisories DEBIAN-CVE-2026-89158

  • pcre2 Ubuntu 22.04 LTS 10.39-3ubuntu0.2
  • pcre2 Ubuntu 24.04 LTS 10.42-4ubuntu2.2
  • pcre2 Ubuntu 26.10 10.46-1ubuntu1
  • pcre2 Ubuntu 26.04 LTS 10.46-1ubuntu0.1
  • pcre2 Ubuntu Pro 16.04 LTS 10.21-1ubuntu0.1~esm1
  • pcre2 Ubuntu Pro 18.04 LTS 10.31-2ubuntu0.1~esm2
  • pcre2 Ubuntu Pro 20.04 LTS 10.34-7ubuntu0.1+esm1

ubuntu advisories UBUNTU-CVE-2026-89158

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • pcre2 RHEL 8 10.32-4.el8_10
  • pcre2-tools RHEL 8 10.32-4.el8_10
  • pcre2-utf16 RHEL 8 10.32-4.el8_10
  • pcre2-utf32 RHEL 8 10.32-4.el8_10
  • pcre2 RHEL 9 10.40-7.el9_8
  • pcre2-tools RHEL 9 10.40-7.el9_8
  • pcre2-utf16 RHEL 9 10.40-7.el9_8
  • pcre2-utf32 RHEL 9 10.40-7.el9_8

red hat advisories RHSA-2026:81613RHSA-2026:81532RHSA-2026:81522RHSA-2026:67534

  • pcre2 SLES for SAP 15 SP5, SLES for SAP 15 SP4, SLES 15 SP5-LTSS +8 more 10.39-150400.4.12.1
  • pcre2 SLES 16.0, Linux Micro 6.2, SLES for SAP applications 16.0 10.45-160000.4.1
  • pcre2 SLES for SAP 15 SP6, SLES 15 SP6-LTSS, SLE Module for Basesystem 15 SP7 10.42-150600.3.3.1
  • pcre2 Linux Micro 6.1 10.42-slfo.1.1_2.1
  • pcre2 Linux Micro 6.0 10.42-3.1
  • pcre2 SLES LTSS Extended Security 12 SP5, SLES 12 SP5-LTSS 10.34-1.16.1

suse advisories SUSE-SU-2026:4458-1SUSE-SU-2026:23891-1SUSE-SU-2026:23906-1SUSE-SU-2026:4241-1SUSE-SU-2026:4201-1SUSE-SU-2026:23740-1

  • pcre2 openSUSE Leap 16.0 10.45-160000.4.1

opensuse advisories openSUSE-SU-2026:21938-1

  • pcre2 AlmaLinux 10 10.44-1.5.el10_2
  • pcre2-tools AlmaLinux 10 10.44-1.5.el10_2
  • pcre2-utf16 AlmaLinux 10 10.44-1.5.el10_2
  • pcre2-utf32 AlmaLinux 10 10.44-1.5.el10_2
  • pcre2-syntax AlmaLinux 10 10.44-1.5.el10_2
  • pcre2 AlmaLinux 9 10.40-7.el9_8
  • pcre2-tools AlmaLinux 9 10.40-7.el9_8
  • pcre2-utf16 AlmaLinux 9 10.40-7.el9_8

almalinux advisories ALSA-2026:81522ALSA-2026:81532ALSA-2026:81613

  • pcre2 Rocky Linux 10 10.44-1.5.el10_2
  • pcre2 Rocky Linux 9 10.40-7.el9_8
  • pcre2 Rocky Linux 8 10.32-4.el8_10

rocky linux advisories RLSA-2026:81522RLSA-2026:81532RLSA-2026:81613

  • pcre2 Alpine 3.21 10.43-r1
  • pcre2 Alpine 3.22 10.46-r1
  • pcre2 Alpine 3.24, Alpine 3.23 10.48-r0

alpine advisories ALPINE-CVE-2026-89158

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • pcre2 Azure Linux 3.0 10.48-1
  • rust Azure Linux 3.0 1.96.0-1

azure linux advisories AZL-100062AZL-101814

Azure Linux vulnerability data, Copyright (c) Microsoft Corporation, from https://github.com/microsoft/AzureLinuxVulnerabilityData via OSV, under the MIT licence; changed: normalised to fixed package versions per release. MIT

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-89158 updated cvss 6.5

PCRE2: PCRE2: Out-of-bounds write via integer overflow on 32-bit platforms

  • Red Hat Enterprise Linux 7 pcre2, pcre2-tools, pcre2-utf16, pcre2-utf32 Red Hat Enterprise Linux 8 Judy, galera, mariadb, mariadb-pam, mariadb-test, mariadb-backup, +8 more Red Hat Enterprise Linux 9 bootc, mariadb, mariadb-pam, mariadb-test, mingw32-pcre2, mingw64-pcre2, +10 more Red Hat Enterprise Linux 10 bootc, mariadb11.8, mingw-pcre2, mariadb10.11, mingw32-pcre2, mingw64-pcre2 Red Hat OpenShift Container Platform 4 openshift/ose-rhel-coreos-8, openshift/ose-rhel-coreos-9 Red Hat OpenShift Container Platform 5 openshift/ose-rhel-coreos-9
    affected: workaround, no fix available “Fix deferred”
  • Red Hat OpenShift AI (RHOAI) rhoai/odh-dashboard-rhel9
    under investigation
  • Red Hat Cost Management 4 costmanagement/costmanagement-metrics-rhel9-operator 1793202662
    fixed: vendor fix RHSA-2026:95264
  • Red Hat Cost Management On-Premise 1 costmanagement/costmanagement-ui-rhel10 1792605272
    fixed: vendor fix RHSA-2026:87400
  • Red Hat Enterprise Linux AppStream (v. 9) pcre2-utf16 10.40-7.el9_8, pcre2-utf32 10.40-7.el9_8
    fixed: vendor fix RHSA-2026:81532
  • Red Hat Enterprise Linux AppStream (v. 10) pcre2-utf16 10.44-1.5.el10_2, pcre2-utf32 10.44-1.5.el10_2
    fixed: vendor fix RHSA-2026:81522
  • Red Hat Enterprise Linux BaseOS (v. 8) pcre2 10.32-4.el8_10, pcre2-utf16 10.32-4.el8_10, pcre2-utf32 10.32-4.el8_10
    fixed: vendor fix RHSA-2026:81613
  • Red Hat Enterprise Linux BaseOS (v. 9) pcre2 10.40-7.el9_8, pcre2-syntax 10.40-7.el9_8
    fixed: vendor fix RHSA-2026:81532
show 9 more
  • Red Hat Enterprise Linux BaseOS (v. 10) pcre2 10.44-1.5.el10_2, pcre2-syntax 10.44-1.5.el10_2
    fixed: vendor fix RHSA-2026:81522
  • Red Hat Enterprise Linux CodeReady Linux Builder (v. 9) pcre2-tools 10.40-7.el9_8
    fixed: vendor fix RHSA-2026:81532
  • Red Hat Enterprise Linux CodeReady Linux Builder (v. 10) pcre2-tools 10.44-1.5.el10_2
    fixed: vendor fix RHSA-2026:81522
  • Red Hat Enterprise Linux CRB (v. 8) pcre2-tools 10.32-4.el8_10
    fixed: vendor fix RHSA-2026:81613
  • Red Hat Hardened Images pcre2 10.48-0.1.hum1, pcre2-tools 10.48-0.1.hum1, pcre2-utf16 10.48-0.1.hum1, pcre2-utf32 10.48-0.1.hum1, pcre2-syntax 10.48-0.1.hum1
    fixed: vendor fix RHSA-2026:67534
  • Red Hat Update Infrastructure 5 rhui5/cds-rhel9 1791978528, rhui5/rhua-rhel9 1791978693, rhui5/haproxy-rhel9 1791978528, rhui5/installer-rhel9 1791964013, rhui5/cds-kubernetes-rhel9 1791978534
    fixed: vendor fix RHSA-2026:82939
  • Red Hat Cost Management 4 costmanagement/costmanagement-metrics-operator-bundle 1793205914
    not affected: vulnerable code not present
  • Red Hat Hardened Images rust
    not affected: component not present
  • Red Hat OpenShift AI (RHOAI) rhoai/odh-kserve-controller-rhel9, rhoai/odh-model-serving-api-rhel9, rhoai/odh-workbenches-operator-rhel9, rhoai/odh-llama-stack-k8s-operator-rhel9, rhoai/odh-kserve-llmisvc-controller-rhel9
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
58 d ago

Exploit prediction

0.25% chance of exploitation in the next 30 days, higher than 16% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 6.5 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:L
NVD 3.1 6.5 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:L

Affected products

  • PCRE PCRE2

Classification

Weakness
  • CWE-190 Integer Overflow or Wraparound

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.