{"schema_version":1,"title":"HAProxy vulnerabilities","summary":"Junglewise Threat Intelligence has tracked 4 vulnerabilities in HAProxy: 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-2026-90678, was published on 13 September 2026.","url":"https://junglewise.ai/threats/technologies/haproxy","json_url":"https://junglewise.ai/threats/technologies/haproxy.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/haproxy","sources":"NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories","kind":"technology","counts":{"high":3,"all_time":4,"critical":0,"exploited":0,"last_7_days":0,"last_30_days":1,"last_90_days":1,"last_365_days":4},"latest":[{"cve":"CVE-2026-90678","cvss":7.5,"epss":0.0077,"slug":"cve-2026-90678-haproxy-http-request-smuggling-in-http-3-multiplexer","title":"HAProxy HTTP request smuggling in HTTP/3 multiplexer","severity":"high","exploited":false,"published_at":"2026-09-13T04:17:25.227+00:00","url":"https://junglewise.ai/threats/cve-2026-90678-haproxy-http-request-smuggling-in-http-3-multiplexer"},{"cve":"CVE-2026-55204","cvss":7.5,"slug":"cve-2026-55204-haproxy-null-pointer-dereference-in-hpack-dht-insert","title":"HAProxy NULL pointer dereference in hpack_dht_insert","severity":"high","exploited":false,"published_at":"2026-06-18T17:16:34.567+00:00","url":"https://junglewise.ai/threats/cve-2026-55204-haproxy-null-pointer-dereference-in-hpack-dht-insert"},{"cve":"CVE-2026-55203","cvss":7.5,"slug":"cve-2026-55203-haproxy-integer-overflow-in-fcgi-demultiplexer","title":"HAProxy integer overflow in FCGI demultiplexer","severity":"high","exploited":false,"published_at":"2026-06-18T17:16:34.373+00:00","url":"https://junglewise.ai/threats/cve-2026-55203-haproxy-integer-overflow-in-fcgi-demultiplexer"},{"cve":"CVE-2026-33555","cvss":4,"epss":0.003,"slug":"cve-2026-33555-haproxy-request-smuggling-via-http-3-standalone-fin","title":"HAProxy request smuggling via HTTP/3 standalone FIN desynchronization","severity":"medium","exploited":false,"published_at":"2026-04-13T17:16:28.237+00:00","url":"https://junglewise.ai/threats/cve-2026-33555-haproxy-request-smuggling-via-http-3-standalone-fin"}],"weekly":[{"week":"2026-06-29","critical":0,"exploited":0,"vulnerabilities":0},{"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":0},{"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":1},{"week":"2026-09-14","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-09-21","critical":0,"exploited":0,"vulnerabilities":0}],"related":[],"technology":{"hub":true,"name":"HAProxy","slug":"haproxy","vendor":{"name":"HAProxy","slug":"haproxy","url":"https://junglewise.ai/threats/vendors/haproxy"},"aliases":[],"category":"web-server","homepage":"https://www.haproxy.org/","repo_url":"https://github.com/haproxy/haproxy","description":"HAProxy is a free, very fast and reliable reverse-proxy offering high availability, load balancing, and proxying for TCP and HTTP-based applications.","url":"https://junglewise.ai/threats/technologies/haproxy"},"most_severe":[{"cve":"CVE-2026-90678","cvss":7.5,"epss":0.0077,"slug":"cve-2026-90678-haproxy-http-request-smuggling-in-http-3-multiplexer","title":"HAProxy HTTP request smuggling in HTTP/3 multiplexer","severity":"high","exploited":false,"published_at":"2026-09-13T04:17:25.227+00:00","url":"https://junglewise.ai/threats/cve-2026-90678-haproxy-http-request-smuggling-in-http-3-multiplexer"},{"cve":"CVE-2026-55204","cvss":7.5,"slug":"cve-2026-55204-haproxy-null-pointer-dereference-in-hpack-dht-insert","title":"HAProxy NULL pointer dereference in hpack_dht_insert","severity":"high","exploited":false,"published_at":"2026-06-18T17:16:34.567+00:00","url":"https://junglewise.ai/threats/cve-2026-55204-haproxy-null-pointer-dereference-in-hpack-dht-insert"},{"cve":"CVE-2026-55203","cvss":7.5,"slug":"cve-2026-55203-haproxy-integer-overflow-in-fcgi-demultiplexer","title":"HAProxy integer overflow in FCGI demultiplexer","severity":"high","exploited":false,"published_at":"2026-06-18T17:16:34.373+00:00","url":"https://junglewise.ai/threats/cve-2026-55203-haproxy-integer-overflow-in-fcgi-demultiplexer"},{"cve":"CVE-2026-33555","cvss":4,"epss":0.003,"slug":"cve-2026-33555-haproxy-request-smuggling-via-http-3-standalone-fin","title":"HAProxy request smuggling via HTTP/3 standalone FIN desynchronization","severity":"medium","exploited":false,"published_at":"2026-04-13T17:16:28.237+00:00","url":"https://junglewise.ai/threats/cve-2026-33555-haproxy-request-smuggling-via-http-3-standalone-fin"}],"generated_at":"2026-09-26T09:11:00.170868+00:00"}