CVE-2026-114099

Coraza 3.0.0 before 3.8.1 WAF Bypass via JSON Key Collision

MEDIUM
5.8
CVSS Score
Published: October 21, 2026 at 12:37 AM UTC
Updated: October 28, 2026 at 05:17 PM UTC
1 product affected across 1 vendorCoraza

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Severity
MEDIUM5.8
Exploit prediction
EPSS 0.3%
SSVC
PoC

Description

Coraza from 3.0.0 before 3.8.1 has a JSON body processor that flattens nested properties into dot-separated ARGS_POST names without escaping literal dots, so distinct properties collide. Unauthenticated attackers can add a later dotted property such as account.role that overwrites a malicious nested value, hiding SQL injection payloads from OWASP CRS rules while backends still receive them.

Affected

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

3.0.0
Vendor states this is fixed in 3.8.1 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

SSVC — Action Prioritization

SSVCPoCNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

5.8MEDIUMVulnCheck
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality
NONE
Integrity
LOW
Availability
NONE
Vector?

Quick Info

StatusAWAITING ANALYSIS
CWE
CWE-20

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