CVE-2026-107826
highOWASP 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 3.8.1, readJSON in internal/bodyprocessors/json.go can stop its bounded flattening walk after reaching SecArgumentsLimit or the byte budget and then call gjson.Valid on the complete raw body. An unauthenticated attacker can submit shallow values followed by an extremely deeply nested JSON tail that was not visited by the bounded walk, causing gjson.Valid to recurse without a depth bound and terminate the hosting process with an unrecoverable fatal stack overflow. The ProcessRequest and ProcessResponse JSON paths share the affected readJSON validation flow, and the payload can remain within recommended body-size and argument-count limits. This issue is fixed in version 3.8.1.
CVSS:3.1/AV:N/AC:L/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/814e1898e083d2ff2ceb644382d0da17e930f93f security-advisories@github.com
- https://github.com/corazawaf/coraza/releases/tag/v3.8.1 security-advisories@github.com
- https://github.com/corazawaf/coraza/security/advisories/GHSA-6gcq-wc29-5xf2 security-advisories@github.com
- https://github.com/corazawaf/coraza/security/advisories/GHSA-6gcq-wc29-5xf2 134c704f-9b21-4f2e-91b3-4a467353bcc0