{"id":"CVE-2026-116011","state":"PUBLISHED","title":"Crow before 1.3.4 Denial of Service via Deeply Nested JSON in crow::json::load()","description":"Crow before 1.3.4 contains an uncontrolled recursion vulnerability in crow::json::load() that allows remote unauthenticated attackers to crash the server by sending deeply nested JSON. Attackers can send a request body with thousands of nested objects to exhaust the worker thread stack, terminating the process and dropping all connections.","publishedAt":"2026-10-24T11:40:30.179Z","updatedAt":"2026-10-26T17:40:34.096Z","severity":{"score":8.7,"label":"High","version":"4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","source":"VulnCheck"},"assigner":"VulnCheck","products":["CrowCpp Crow"],"affected":[{"vendor":"CrowCpp","product":"Crow","packageURL":"pkg:github/crowcpp/crow","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"1.3.4","versionType":"semver"}],"repo":"https://github.com/CrowCpp/Crow"}],"references":["https://github.com/CrowCpp/Crow/security/advisories/GHSA-7x84-xhp8-6cqj","https://github.com/CrowCpp/Crow/commit/6956b7ca93c5df22f5aaccd670e5aa000c0d882b","https://github.com/CrowCpp/Crow/releases/tag/v1.3.4","https://github.com/CrowCpp/Crow/blob/v1.3.3/include/crow/json.h#L878","https://www.vulncheck.com/advisories/crow-before-1.3.4-denial-of-service-via-deeply-nested-json-in-crow-json-load"],"weaknesses":["CWE-674"],"ingestedAt":"2026-10-29T20:10:43.281Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/116xxx/CVE-2026-116011.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-116011","state":"PUBLISHED","datePublished":"2026-10-24T11:40:30.179Z","dateUpdated":"2026-10-26T17:40:34.096Z","assignerShortName":"VulnCheck","assignerOrgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","dateReserved":"2026-10-24T11:23:54.190Z"},"containers":{"cna":{"title":"Crow before 1.3.4 Denial of Service via Deeply Nested JSON in crow::json::load()","descriptions":[{"lang":"en","value":"Crow before 1.3.4 contains an uncontrolled recursion vulnerability in crow::json::load() that allows remote unauthenticated attackers to crash the server by sending deeply nested JSON. Attackers can send a request body with thousands of nested objects to exhaust the worker thread stack, terminating the process and dropping all connections."}],"affected":[{"vendor":"CrowCpp","product":"Crow","packageURL":"pkg:github/crowcpp/crow","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"1.3.4","versionType":"semver"}],"repo":"https://github.com/CrowCpp/Crow"}],"references":[{"url":"https://github.com/CrowCpp/Crow/security/advisories/GHSA-7x84-xhp8-6cqj","tags":["vendor-advisory"],"name":"GitHub Security Advisory (GHSA-7x84-xhp8-6cqj)"},{"url":"https://github.com/CrowCpp/Crow/commit/6956b7ca93c5df22f5aaccd670e5aa000c0d882b","tags":["patch"]},{"url":"https://github.com/CrowCpp/Crow/releases/tag/v1.3.4","tags":["release-notes"],"name":"Crow v1.3.4 Release Notes"},{"url":"https://github.com/CrowCpp/Crow/blob/v1.3.3/include/crow/json.h#L878","tags":["technical-description"]},{"url":"https://www.vulncheck.com/advisories/crow-before-1.3.4-denial-of-service-via-deeply-nested-json-in-crow-json-load","name":"VulnCheck Advisory: Crow before 1.3.4 Denial of Service via Deeply Nested JSON in crow::json::load()","tags":["third-party-advisory"]}],"metrics":[{"format":"CVSS","cvssV4_0":{"version":"4.0","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"NONE","userInteraction":"NONE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE","vulnAvailabilityImpact":"HIGH","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","baseScore":8.7,"baseSeverity":"HIGH"}},{"format":"CVSS","cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH","baseScore":7.5,"baseSeverity":"HIGH"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-674","lang":"en","description":"Uncontrolled Recursion","type":"CWE"}]}],"providerMetadata":{"shortName":"VulnCheck","orgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","dateUpdated":"2026-10-24T11:40:30.179Z"},"datePublic":"2026-09-05T19:21:10.000Z","cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:crowcpp:crow:*:*:*:*:*:*:*:*","versionEndExcluding":"1.3.4"}]}]}],"credits":[{"lang":"en","value":"dread (d7ead)","type":"finder"}],"x_generator":{"engine":"vulncheck-endgame"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-10-26T15:43:59.203800Z","id":"CVE-2026-116011","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-10-26T17:40:34.096Z"}}]}}}