{"schema_version":1,"title":"Nine Nines Cowboy vulnerabilities","summary":"Junglewise Threat Intelligence has tracked 3 vulnerabilities in Nine Nines Cowboy: 0 in the last 7 days and 1 in the last 90 days, 0 of them critical and 0 exploited in the wild. The most recent, CVE-2026-65624, was published on 28 July 2026.","url":"https://junglewise.ai/threats/technologies/cowboy","json_url":"https://junglewise.ai/threats/technologies/cowboy.json","publisher":"Junglewise Threat Intelligence","license":"CC-BY-4.0","license_url":"https://creativecommons.org/licenses/by/4.0/","attribution":"Junglewise Threat Intelligence, https://junglewise.ai/threats/technologies/cowboy","sources":"NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories","kind":"technology","counts":{"high":1,"all_time":3,"critical":0,"exploited":0,"last_7_days":0,"last_30_days":0,"last_90_days":1,"last_365_days":3},"latest":[{"cve":"CVE-2026-65624","cvss":6.9,"slug":"cve-2026-65624-ninenines-cowboy-memory-exhaustion-via-duplicate-http-headers","title":"ninenines cowboy memory exhaustion via duplicate HTTP headers","severity":"info","exploited":false,"published_at":"2026-07-28T10:16:50.5+00:00","url":"https://junglewise.ai/threats/cve-2026-65624-ninenines-cowboy-memory-exhaustion-via-duplicate-http-headers"},{"cve":"CVE-2026-43966","cvss":6.3,"epss":0.0031,"slug":"cve-2026-43966-ninenines-cowlib-http-response-splitting-in-structured-headers","title":"ninenines cowlib HTTP response splitting in structured headers","severity":"medium","exploited":false,"published_at":"2026-06-08T17:16:43.447+00:00","url":"https://junglewise.ai/threats/cve-2026-43966-ninenines-cowlib-http-response-splitting-in-structured-headers"},{"cve":"CVE-2026-8466","cvss":8.2,"epss":0.0002,"slug":"cve-2026-8466-ninenines-cowboy-denial-of-service-in-multipart-header-parsing","title":"ninenines cowboy denial of service in multipart header parsing","severity":"high","exploited":false,"published_at":"2026-05-13T19:17:30.54+00:00","url":"https://junglewise.ai/threats/cve-2026-8466-ninenines-cowboy-denial-of-service-in-multipart-header-parsing"}],"weekly":[{"week":"2026-07-06","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-07-13","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-07-20","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-07-27","critical":0,"exploited":0,"vulnerabilities":1},{"week":"2026-08-03","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-10","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-17","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-24","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-31","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-09-07","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-09-14","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-09-21","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-09-28","critical":0,"exploited":0,"vulnerabilities":0}],"related":[{"name":"Nine Nines Cowlib","slug":"cowlib","vulnerabilities":6,"url":"https://junglewise.ai/threats/technologies/cowlib"},{"name":"Nine Nines Gun","slug":"gun","vulnerabilities":5,"url":"https://junglewise.ai/threats/technologies/gun"}],"technology":{"hub":true,"name":"Nine Nines Cowboy","slug":"cowboy","vendor":{"name":"Nine Nines","slug":"nine-nines","url":"https://junglewise.ai/threats/vendors/nine-nines"},"aliases":[],"category":"library","homepage":"https://ninenines.eu/docs/en/cowboy/2.13/guide/","repo_url":"https://github.com/ninenines/cowboy","description":"Cowboy is a small, fast, and modern HTTP server for Erlang/OTP.","url":"https://junglewise.ai/threats/technologies/cowboy"},"most_severe":[{"cve":"CVE-2026-8466","cvss":8.2,"epss":0.0002,"slug":"cve-2026-8466-ninenines-cowboy-denial-of-service-in-multipart-header-parsing","title":"ninenines cowboy denial of service in multipart header parsing","severity":"high","exploited":false,"published_at":"2026-05-13T19:17:30.54+00:00","url":"https://junglewise.ai/threats/cve-2026-8466-ninenines-cowboy-denial-of-service-in-multipart-header-parsing"},{"cve":"CVE-2026-43966","cvss":6.3,"epss":0.0031,"slug":"cve-2026-43966-ninenines-cowlib-http-response-splitting-in-structured-headers","title":"ninenines cowlib HTTP response splitting in structured headers","severity":"medium","exploited":false,"published_at":"2026-06-08T17:16:43.447+00:00","url":"https://junglewise.ai/threats/cve-2026-43966-ninenines-cowlib-http-response-splitting-in-structured-headers"},{"cve":"CVE-2026-65624","cvss":6.9,"slug":"cve-2026-65624-ninenines-cowboy-memory-exhaustion-via-duplicate-http-headers","title":"ninenines cowboy memory exhaustion via duplicate HTTP headers","severity":"info","exploited":false,"published_at":"2026-07-28T10:16:50.5+00:00","url":"https://junglewise.ai/threats/cve-2026-65624-ninenines-cowboy-memory-exhaustion-via-duplicate-http-headers"}],"generated_at":"2026-09-28T03:07:00.154823+00:00"}