CVE-2026-114099
Coraza 3.0.0 before 3.8.1 WAF Bypass via JSON Key Collision
- State
- Published
- Severity
- 6.9 Medium
- Published
- Oct 21, 2026
- Updated
- Oct 28, 2026
- Reserved
- Oct 20, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 6.9 Medium | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:L/SA:N | VulnCheck |
| 3.1 | 5.8 Medium | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N | VulnCheck |
Weaknesses
- CWE-20 Improper Input Validation
Affected Products
| Product | Versions |
|---|---|
corazacorazawaf |
|
References
- GitHub Security Advisory (GHSA-5gj4-9gm7-2fx2)vendor-advisory
- VulnCheck Advisory: Coraza 3.0.0 before 3.8.1 WAF Bypass via JSON Key Collisionthird-party-advisory
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