Name: CVE-2026-103111: Out-of-bounds Write
Creator: Rapid7
Published: 2026-09-30T00:00:00.000Z
License: https://www.rapid7.com/legal/website-terms-of-use/
Keywords: CVE, CVE-2026-103111, CWE-787, CVSS 7.6, EPSS 0.00214

PCRE2 before 10.49, when there is an attacker-controlled regular expression and certain JIT API usage, allows an out-of-bounds write with arbitrary data.

CVSS Details

CVSS 3.1 Base Score: 7.6
CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:L)

Covered by Rapid7

Product	Vendor Advisory	Solution File	Added	Published
Alma_linux	—	Upgrade pcre2-utf32Upgrade pcre2-syntaxUpgrade pcre2-utf16Upgrade pcre2-develUpgrade pcre2-toolsUpgrade pcre2	Oct 13, 2026	Oct 12, 2026
Alpine Linux	—	Upgrade pcre2	Oct 2, 2026	Sep 30, 2026
Debian	—	Upgrade pcre2	Oct 1, 2026	Sep 30, 2026
Redhat_linux	—	Upgrade mariadb11.8-gssapi-server-debuginfoUpgrade pcre2-debuginfoUpgrade mariadb11.8-backup-debuginfoUpgrade mariadb11.8-embeddedUpgrade pcre2-debugsourceUpgrade mariadb11.8-oqgraph-engineUpgrade pcre2Upgrade pcre2-develUpgrade mariadb11.8-backupNo solution existsUpgrade mariadb11.8-pam-debuginfoUpgrade pcre2-utf16-debuginfoUpgrade mariadb11.8-commonUpgrade mariadb11.8-embedded-debuginfoUpgrade mariadb11.8-errmsgUpgrade pcre2-utf32Upgrade mariadb11.8-pamUpgrade pcre2-utf32-debuginfoUpgrade mariadb11.8-debugsourceUpgrade mariadb11.8-server-debuginfoUpgrade mariadb11.8-gssapi-serverUpgrade mariadb11.8-testUpgrade pcre2-utf16Upgrade mariadb11.8-server-galera-debuginfoUpgrade pcre2-tools-debuginfoUpgrade mariadb11.8-develUpgrade pcre2-syntaxUpgrade mariadb11.8-server-galeraUpgrade mariadb11.8-embedded-develUpgrade mariadb11.8-serverUpgrade mariadb11.8-test-debuginfoUpgrade mariadb11.8-client-utilsUpgrade mariadb11.8-debuginfoUpgrade mariadb11.8-oqgraph-engine-debuginfoUpgrade mariadb11.8-server-utilsUpgrade pcre2-toolsUpgrade pcre2-staticUpgrade mariadb11.8	Oct 1, 2026	Sep 30, 2026
Rocky_linux	—	Upgrade pcre2Upgrade pcre2-debugsourceUpgrade pcre2-utf32-debuginfoUpgrade pcre2-tools-debuginfoUpgrade pcre2-staticUpgrade pcre2-toolsUpgrade pcre2-debuginfoUpgrade pcre2-develUpgrade pcre2-utf32Upgrade pcre2-utf16Upgrade pcre2-utf16-debuginfo	Oct 16, 2026	Oct 14, 2026

Prioritise with Active Threat Intelligence

With curated Threat Intelligence, you can see which vulnerabilities truly put you at risk, prioritize what matters most, and act before attackers do.

Explore Intelligence Hub

MDR Buyer's Guide

Global Threat Landscape Report

Grow your business

CVSS Details

Covered by Rapid7

Prioritise with Active Threat Intelligence