Vulnerability · Published Sep 5, 2026 · Assigned by mitre
CVE-2026-86145
High 8.2
In plain English
A high-severity security flaw in PCRE2 from PCRE. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 37% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
PCRE2 before 10.48 allows a pcre2_dfa_match out-of-bounds write because reuse of a cached workspace block, in a recursive DFA matching workspace, lacks a size check (even though a newly allocated block, for the same purpose, does have a size check). This outcome requires an attacker-controlled regular expression, or a recursive pattern in conjunction with a small heap limit (this can be set through the API).
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux:10 | mariadb11.8 | 3:11.8.8-2.el10_2.alma.2 | ALSA-2026:84799 |
| AlmaLinux:10 | mariadb11.8-backup | 3:11.8.8-2.el10_2.alma.2 | ALSA-2026:84799 |
| AlmaLinux:10 | mariadb11.8-client-utils | 3:11.8.8-2.el10_2.alma.2 | ALSA-2026:84799 |
| AlmaLinux:10 | mariadb11.8-common | 3:11.8.8-2.el10_2.alma.2 | ALSA-2026:84799 |
| AlmaLinux:10 | mariadb11.8-devel | 3:11.8.8-2.el10_2.alma.2 | ALSA-2026:84799 |
| AlmaLinux:10 | mariadb11.8-embedded | 3:11.8.8-2.el10_2.alma.2 | ALSA-2026:84799 |
| AlmaLinux:10 | mariadb11.8-embedded-devel | 3:11.8.8-2.el10_2.alma.2 | ALSA-2026:84799 |
| AlmaLinux:10 | mariadb11.8-errmsg | 3:11.8.8-2.el10_2.alma.2 | ALSA-2026:84799 |
| AlmaLinux:10 | mariadb11.8-gssapi-server | 3:11.8.8-2.el10_2.alma.2 | ALSA-2026:84799 |
| AlmaLinux:10 | mariadb11.8-oqgraph-engine | 3:11.8.8-2.el10_2.alma.2 | ALSA-2026:84799 |
| AlmaLinux:10 | mariadb11.8-pam | 3:11.8.8-2.el10_2.alma.2 | ALSA-2026:84799 |
| AlmaLinux:10 | mariadb11.8-server | 3:11.8.8-2.el10_2.alma.2 | ALSA-2026:84799 |
| AlmaLinux:10 | mariadb11.8-server-galera | 3:11.8.8-2.el10_2.alma.2 | ALSA-2026:84799 |
| AlmaLinux:10 | mariadb11.8-server-utils | 3:11.8.8-2.el10_2.alma.2 | ALSA-2026:84799 |
| AlmaLinux:10 | mariadb11.8-test | 3:11.8.8-2.el10_2.alma.2 | ALSA-2026:84799 |
| AlmaLinux:10 | pcre2 | 10.44-1.5.el10_2 | ALSA-2026:81522 |
| AlmaLinux:8 | pcre2 | 10.32-4.el8_10 | ALSA-2026:81613 |
| AlmaLinux:9 | pcre2 | 10.40-7.el9_8 | ALSA-2026:81532 |
| AlmaLinux:10 | pcre2-devel | 10.44-1.5.el10_2 | ALSA-2026:81522 |
| AlmaLinux:8 | pcre2-devel | 10.32-4.el8_10 | ALSA-2026:81613 |
| AlmaLinux:9 | pcre2-devel | 10.40-7.el9_8 | ALSA-2026:81532 |
| AlmaLinux:10 | pcre2-static | 10.44-1.5.el10_2 | ALSA-2026:81522 |
| AlmaLinux:10 | pcre2-syntax | 10.44-1.5.el10_2 | ALSA-2026:81522 |
| AlmaLinux:9 | pcre2-syntax | 10.40-7.el9_8 | ALSA-2026:81532 |
| AlmaLinux:10 | pcre2-tools | 10.44-1.5.el10_2 | ALSA-2026:81522 |
| AlmaLinux:8 | pcre2-tools | 10.32-4.el8_10 | ALSA-2026:81613 |
| AlmaLinux:9 | pcre2-tools | 10.40-7.el9_8 | ALSA-2026:81532 |
| AlmaLinux:10 | pcre2-utf16 | 10.44-1.5.el10_2 | ALSA-2026:81522 |
| AlmaLinux:8 | pcre2-utf16 | 10.32-4.el8_10 | ALSA-2026:81613 |
| AlmaLinux:9 | pcre2-utf16 | 10.40-7.el9_8 | ALSA-2026:81532 |
| AlmaLinux:10 | pcre2-utf32 | 10.44-1.5.el10_2 | ALSA-2026:81522 |
| AlmaLinux:8 | pcre2-utf32 | 10.32-4.el8_10 | ALSA-2026:81613 |
| AlmaLinux:9 | pcre2-utf32 | 10.40-7.el9_8 | ALSA-2026:81532 |
| Alpine:v3.21 | pcre2 | 10.43-r1 | ALPINE-CVE-2026-86145 |
| Alpine:v3.22 | pcre2 | 10.46-r1 | ALPINE-CVE-2026-86145 |
| Alpine:v3.23 | pcre2 | 10.48-r0 | ALPINE-CVE-2026-86145 |
| Alpine:v3.24 | pcre2 | 10.48-r0 | ALPINE-CVE-2026-86145 |
| Debian:12 | pcre2 | 10.42-1+deb12u1 | DEBIAN-CVE-2026-86145 |
| Debian:13 | pcre2 | 10.46-1~deb13u2 | DEBIAN-CVE-2026-86145 |
| Debian:14 | pcre2 | 10.48-1 | DEBIAN-CVE-2026-86145 |
| Rocky Linux:10 | mariadb11.8 | 3:11.8.8-2.el10_2 | RLSA-2026:84799 |
| Rocky Linux:10 | pcre2 | 0:10.44-1.5.el10_2 | RLSA-2026:81522 |
| Rocky Linux:8 | pcre2 | 0:10.32-4.el8_10 | RLSA-2026:81613 |
| Rocky Linux:9 | pcre2 | 0:10.40-7.el9_8 | RLSA-2026:81532 |
| Ubuntu:22.04:LTS | pcre2 | 10.39-3ubuntu0.2 | UBUNTU-CVE-2026-86145 |
| Ubuntu:22.04:LTS | pcre2 | 10.39-3ubuntu0.2 | USN-8974-1 |
| Ubuntu:24.04:LTS | pcre2 | 10.42-4ubuntu2.2 | UBUNTU-CVE-2026-86145 |
| Ubuntu:24.04:LTS | pcre2 | 10.42-4ubuntu2.2 | USN-8974-1 |
| Ubuntu:26.04:LTS | pcre2 | 10.46-1ubuntu0.1 | UBUNTU-CVE-2026-86145 |
| Ubuntu:26.04:LTS | pcre2 | 10.46-1ubuntu0.1 | USN-8974-1 |
| Ubuntu:26.10 | pcre2 | 10.46-1ubuntu1 | UBUNTU-CVE-2026-86145 |
| Ubuntu:26.10 | pcre2 | 10.46-1ubuntu1 | USN-8974-1 |
Affected products (as reported)
Weakness: CWE-424 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:L