{"action":"Upgrade curl to 8.20.0~rc3-1 or later.","affected":[{"fixed":"8.20.0~rc3-1","introduced":"0"}],"component":"curl","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:14","exploited":false,"fixed_versions":["8.20.0~rc3-1"],"id":"tcs_01M5NT8PSYV1M0KM4F4N90FD15","modified_at":"2026-10-01T03:03:29.108334674Z","published_at":"2026-05-13T13:01:56.800Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2026-6276","https://security-tracker.debian.org/tracker/CVE-2026-6276"],"severity":{"label":"high","score":7.5},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2026-6276#Debian:14/curl","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2026-6276"}],"summary":"Using libcurl, when a custom `Host:` header is first set for an HTTP request and a second request is subsequently done using the same *easy handle* but without the custom `Host:` header set, the secon"}