{"cve":"CVE-2026-107833","nvd":{"published":"2026-10-09T18:17:04.847","modified":"2026-10-16T17:16:41.300","status":"Awaiting Analysis","description":"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_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","score":5.9},"cwes":["CWE-674"],"references":["https://github.com/corazawaf/coraza/commit/cae3c7407e7b84372c207033de03f15f89bf351a","https://github.com/corazawaf/coraza/releases/tag/v3.8.0","https://github.com/corazawaf/coraza/security/advisories/GHSA-3c6w-j9xm-8h2h","https://github.com/corazawaf/coraza/security/advisories/GHSA-3c6w-j9xm-8h2h"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:58:01.639778232+00:00"},"epss":{"cve":"CVE-2026-107833","score":0.00388,"percentile":0.32641,"date":"2026-10-25"},"kev":null,"osv":[{"id":"GHSA-3c6w-j9xm-8h2h","url":"https://osv.dev/vulnerability/GHSA-3c6w-j9xm-8h2h","summary":"Coraza: Unbounded recursion in JSON response body processor causes CPU exhaustion","modified":"2026-10-19T21:40:39.936037347Z","packages":[{"ecosystem":"Go","name":"github.com/corazawaf/coraza/v3","purl":"pkg:golang/github.com/corazawaf/coraza/v3","ranges":[">=3.0.0 <3.8.0"],"fixed":["3.8.0"]}]},{"id":"GO-2026-6690","url":"https://osv.dev/vulnerability/GO-2026-6690","summary":"Coraza: Unbounded recursion in JSON response body processor causes CPU exhaustion in github.com/corazawaf/coraza","modified":"2026-10-19T21:40:39.936037347Z","packages":[{"ecosystem":"Go","name":"github.com/corazawaf/coraza","purl":"pkg:golang/github.com/corazawaf/coraza","ranges":["all versions"],"fixed":[]},{"ecosystem":"Go","name":"github.com/corazawaf/coraza/v2","purl":"pkg:golang/github.com/corazawaf/coraza/v2","ranges":["all versions"],"fixed":[]},{"ecosystem":"Go","name":"github.com/corazawaf/coraza/v3","purl":"pkg:golang/github.com/corazawaf/coraza/v3","ranges":[">=3.0.0 <3.8.0"],"fixed":["3.8.0"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}