{"action":"Upgrade curl to 8.22.0-1 or later.","affected":[{"fixed":"8.22.0-1","introduced":"0"}],"component":"curl","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:14","exploited":false,"fixed_versions":["8.22.0-1"],"id":"tcs_01M5NW14S5N1E01TKB98HAFD5H","modified_at":"2026-10-23T17:47:33.763391268Z","published_at":"2026-10-20T20:17:25.223Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2026-86409","https://security-tracker.debian.org/tracker/CVE-2026-86409"],"severity":{"label":"unknown"},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2026-86409#Debian:14/curl","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2026-86409"}],"summary":"Setting `CURLOPT_AWS_SIGV4` to NULL but does not disable SigV4 authentication, contrary to expectations and documentation. A subsequent transfer on the same handle still sends an `Authorization: AWS4-"}