DEBIAN-CVE-2026-103932

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    DEBIAN-CVE-2026-103932

    Published: 5 Nov 2026Last Modified: 6 Nov 2026
    Upstream:
    CVE-2026-103932

    Summary:

    Details: ModSecurity is an open source, cross platform web application firewall (WAF) engine for Apache, IIS and Nginx. From 3.0.5 until 3.0.17, the PCRE2 implementation of @rxGlobal in src/utils/regex.cc converts pcre2_match match-limit errors into an ordinary no-match result instead of propagating a non-OK RegexResult. When attacker-controlled input exhausts SecPcreMatchLimit, rules that rely on MSC_PCRE_LIMITS_EXCEEDED or its TX compatibility indicator do not run, so a request that should be rejected can pass through the WAF. The issue affects PCRE2 deployments that use @rxGlobal with a limit-exhaustible expression and a compensating rule; it is not a universal WAF bypass. This issue is fixed in version 3.0.17.

    References: https://security-tracker.debian.org/tracker/CVE-2026-103932

    Affected packages

    Package

    Name: modsecurity

    Purl: pkg:deb/debian/modsecurity?arch=source&distro=bookworm

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -None

    Affected versions

    3.0.10-1
    3.0.11-1
    3.0.12-1
    3.0.12-1.1
    3.0.12-1.1~exp1
    3.0.13-1
    3.0.14-1
    3.0.15-1
    3.0.16-1
    3.0.9-1
    3.0.9-1+deb12u1
    3.0.9-1+deb12u2

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High
    DEBIAN-CVE-2026-103932 | CVE-DB