CVE-2026-114099 Coraza 3.0.0 before 3.8.1 WAF Bypass via JSON Key Collision
- Exploited in the wild
- Not known
- Fix
- Available
What is CVE-2026-114099?
CVE-2026-114099 is a medium-severity vulnerability in corazawaf coraza, published on 21 Oct 2026.
Official 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.
Weakness: CWE-20
Which versions are affected by CVE-2026-114099?
5 open source packages ship an affected version, including github.com/corazawaf/coraza/v3, github.com/corazawaf/coraza and github.com/corazawaf/coraza/v2.
| Package | Affected | Fixed in |
|---|---|---|
github.com/corazawaf/coraza/v3 Go | From 3.0.0 | 3.8.1 |
github.com/corazawaf/coraza/v3 Go | From 3.0.0 | 3.8.1 |
github.com/corazawaf/coraza/v3 Go | From 3.0.0 | 3.8.1 |
github.com/corazawaf/coraza Go | All versions | None |
github.com/corazawaf/coraza/v2 Go | All versions | None |
How do I fix CVE-2026-114099?
Upgrade github.com/corazawaf/coraza/v3 to 3.8.1 or later.
Is CVE-2026-114099 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-114099 exists.
Sources
Also known as GHSA-5gj4-9gm7-2fx2, GHSA-vmwg-gmpq-826x, GO-2026-6692.