CVE-2026-107833Medium· 5.9▾ SunlitOWASP 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 recur…
▾ Sunlit zone — Low / medium · no exploitation signal
impact 32.5 · likelihood 0 · exploitation 0
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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.
Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Affected packages:
github.com/corazawaf/coraza/v3 >= 3.0.0, < 3.8.0Patched in:
github.com/corazawaf/coraza/v3 3.8.0Connected by shared product, vendor, weakness, or advisory.
GHSA-3c6w-j9xm-8h2hMedium· 5.9Coraza: Unbounded recursion in JSON response body processor causes CPU exhaustion
CVE-2026-107825Medium· 4.0OWASP Coraza WAF is a golang modsecurity compatible web application firewall library
CVE-2026-107826High· 7.5OWASP Coraza WAF is a golang modsecurity compatible web application firewall library
CVE-2026-107834Medium· 5.3OWASP Coraza WAF is a golang modsecurity compatible web application firewall library
GHSA-5gj4-9gm7-2fx2Medium· 5.8Coraza body processor has a JSON key collision that allows unauthenticated attackers to bypass OWASP CRS inspection
GHSA-6gcq-wc29-5xf2High· 7.5Coraza JSON body processor: argument-limit truncation reopens an unbounded-depth gjson.Valid stack overflow (process crash)