{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-62864", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-07-14T21:10:50.032Z", "datePublished": "2026-10-30T20:34:42.963Z", "dateUpdated": "2026-10-30T20:34:42.963Z"}, "containers": {"cna": {"title": "Ring's nested-params middleware has inefficient regular expression complexity", "problemTypes": [{"descriptions": [{"cweId": "CWE-1333", "lang": "en", "description": "CWE-1333: Inefficient Regular Expression Complexity", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}}], "references": [{"name": "https://github.com/ring-clojure/ring/security/advisories/GHSA-q2j3-fc6x-78jj", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/ring-clojure/ring/security/advisories/GHSA-q2j3-fc6x-78jj"}, {"name": "https://github.com/ring-clojure/ring/commit/18738cbb8ab7504da4a5c72c9eb5fdcbf142646e", "tags": ["x_refsource_MISC"], "url": "https://github.com/ring-clojure/ring/commit/18738cbb8ab7504da4a5c72c9eb5fdcbf142646e"}, {"name": "https://github.com/ring-clojure/ring/tree/1.15.5", "tags": ["x_refsource_MISC"], "url": "https://github.com/ring-clojure/ring/tree/1.15.5"}], "affected": [{"vendor": "ring-clojure", "product": "ring", "versions": [{"version": "< 1.15.5", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-10-30T20:34:42.963Z"}, "descriptions": [{"lang": "en", "value": "Ring is a Clojure web applications library inspired by Python's WSGI and Ruby's Rack. Prior to 1.15.5, `wrap-nested-params` in the `ring.middleware.nested-params` namespace uses a backtracking regular expression to match parameter names from URL query strings and HTTP request bodies. An attacker can craft a parameter name that drives quadratic O(n^2) matching work, causing regular-expression denial of service in applications using the middleware. `Ring-Defaults` users are also exposed because nested-params is enabled by default. Applications omitting the middleware do not expose this parsing path. This issue is fixed in version 1.15.5."}], "source": {"advisory": "GHSA-q2j3-fc6x-78jj", "discovery": "UNKNOWN"}}}}

{}

{"affected": [{"affectedData": [{"product": "ring", "vendor": "ring-clojure", "versions": [{"status": "affected", "version": "< 1.15.5"}]}], "source": "security-advisories@github.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Ring is a Clojure web applications library inspired by Python's WSGI and Ruby's Rack. Prior to 1.15.5, `wrap-nested-params` in the `ring.middleware.nested-params` namespace uses a backtracking regular expression to match parameter names from URL query strings and HTTP request bodies. An attacker can craft a parameter name that drives quadratic O(n^2) matching work, causing regular-expression denial of service in applications using the middleware. `Ring-Defaults` users are also exposed because nested-params is enabled by default. Applications omitting the middleware do not expose this parsing path. This issue is fixed in version 1.15.5."}], "id": "CVE-2026-62864", "lastModified": "2026-10-30T21:17:14.693", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 3.6, "source": "security-advisories@github.com", "type": "Secondary"}]}, "published": "2026-10-30T21:17:14.693", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/ring-clojure/ring/commit/18738cbb8ab7504da4a5c72c9eb5fdcbf142646e"}, {"source": "security-advisories@github.com", "url": "https://github.com/ring-clojure/ring/security/advisories/GHSA-q2j3-fc6x-78jj"}, {"source": "security-advisories@github.com", "url": "https://github.com/ring-clojure/ring/tree/1.15.5"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-1333"}], "source": "security-advisories@github.com", "type": "Primary"}]}

{}

{}