CVE-2019-25043

MEDIUM
5.3
CVSS Score
Published: May 6, 2021 at 04:32 PM UTC
Updated: June 17, 2026 at 02:31 AM UTC
1 product affected across 1 vendorModsecurity

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Severity
MEDIUM5.3
Exploit prediction
EPSS 1%

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

3.0.0 ≤ v < 3.0.4
Affected range stops below 3.0.4, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (1)

x_refsource_MISCExploitThird Party Advisory
https://github.com/SpiderLabs/ModSecurity/issues/2566

CVSS

Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
LOW
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-755

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