Medium severity5.3NVD Advisory· Published May 6, 2021· Updated Jun 17, 2026

CVE-2019-25043

Description

ModSecurity 3.x before 3.0.4 mishandles key-value pair parsing, as demonstrated by a "string index out of range" error and worker-process crash for a "Cookie: =abc" header.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

Trustwave/Modsecurity
cpe:2.3:a:owasp:modsecurity:*:*:*:*:*:*:*:*
Range: >=3.0.0,<3.0.4
ModSecurity/ModSecuritydescription
Spiderlabs/ModSecurityllm-fuzzy
Range: <3.0.4

Patches

Vulnerability mechanics

References

github.com/SpiderLabs/ModSecurity/issues/2566nvdExploitThird Party Advisory

News mentions

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