{"action":"No fix published. Pin and monitor.","affected":[{"introduced":"0"}],"component":"python-h2","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:14","exploited":false,"fixed_versions":[],"id":"tcs_01M5NTY8E079K36PPXQD2RFD12","modified_at":"2026-10-25T09:47:36.588733388Z","published_at":"2026-08-06T22:18:32.403Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2026-71554","https://security-tracker.debian.org/tracker/CVE-2026-71554"],"severity":{"label":"medium","score":5.3},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2026-71554#Debian:14/python-h2","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2026-71554"}],"summary":"h2 is a pure-Python implementation of a HTTP/2 protocol stack. Versions up to and including 4.4.0 accept request header blocks containing more than one Host header, and forward every Host header to th"}