CVE-2026-107833
mediumOWASP Coraza WAF is a golang modsecurity compatible web application firewall library.
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/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H Affected products
Not reported by the source (unknown — not "none").
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
No vendor advisory or patch reference tagged by NVD. Check the references below.
References
- https://github.com/corazawaf/coraza/commit/cae3c7407e7b84372c207033de03f15f89bf351a security-advisories@github.com
- https://github.com/corazawaf/coraza/releases/tag/v3.8.0 security-advisories@github.com
- https://github.com/corazawaf/coraza/security/advisories/GHSA-3c6w-j9xm-8h2h security-advisories@github.com
- https://github.com/corazawaf/coraza/security/advisories/GHSA-3c6w-j9xm-8h2h 134c704f-9b21-4f2e-91b3-4a467353bcc0