CVE-2026-103932
MEDIUM
MEDIUM
Priority: 0.02
BB Relevance:
72/100
Published: 2026-11-05
Modified: 2026-11-12
First seen: 2026-11-05
Status: active
Attack Surface
Network
Low Complexity
No Auth
No Interaction
Scope Change
CVSS Vector Breakdown
AV:
Network
AC:
Low
PR:
None
UI:
None
S:
Changed
C:
None
I:
Low
A:
None
Description
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.
Weakness Classification (1)
Affected Software (2)
| Vendor | Product | Version |
|---|---|---|
| owasp-modsecurity | ModSecurity | >= 3.0.5, < 3.0.17 |
| owasp-modsecurity | ModSecurity | >= 3.0.5, < 3.0.17 |
References & Advisories (3)
x_refsource_MISC
x_refsource_MISC
x_refsource_CONFIRM