CVE-2026-107833
OWASP Coraza WAF is a golang modsecurity compatible web application firewall library. From 3.0.0 until 3.8.0, ProcessResponse in internal/bodyprocessors/json.go passes the ignoreJSONRecursionLimit value of -1 to readJSON, while the recursive guard only stops at zero. A network attacker who can cause an application protected by Coraza to return deeply nested JSON can make response-body processing perform quadratic work, consuming one CPU core for seconds per response within the default ResponseBodyLimit. Request JSON processing is not affected by this specific path because it uses the configured request recursion limit, and exploitation requires response-body inspection to be enabled. This issue is fixed in version 3.8.0.
- CVSS 3.1
- 5.9
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H - EPSS
- 0.4% chance of exploitation in the next 30 days; higher than 32% of CVEs (scores of 2026-10-25)
- CWE
- CWE-674
- Published
- Modified
- Record from
- the NVD, synced
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-3c6w-j9xm-8h2h | Go | github.com/corazawaf/coraza/v3 | >=3.0.0 <3.8.0 | 3.8.0 |
| GO-2026-6690 | Go | github.com/corazawaf/coraza | all versions | no fix published |
| GO-2026-6690 | Go | github.com/corazawaf/coraza/v2 | all versions | no fix published |
| GO-2026-6690 | Go | github.com/corazawaf/coraza/v3 | >=3.0.0 <3.8.0 | 3.8.0 |