{"id":"DEBIAN-CVE-2026-1858","details":"wget2 accepts a server certificate with incorrect Key Usage (KU) or Extended Key Usage (EKU). If the attackers compromise a certificate (with the associated private key) issued for a different purpose, they may be able to reuse it for TLS server authentication.","modified":"2026-09-14T17:00:18.231564274Z","published":"2026-04-29T21:16:20.513Z","upstream":["CVE-2026-1858"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2026-1858"}],"affected":[{"package":{"name":"wget2","ecosystem":"Debian:12","purl":"pkg:deb/debian/wget2?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.99.1-2.2","2.1.0-1","2.1.0-2","2.1.0-2.1","2.1.0-2.1~exp1","2.1.0-3","2.1.0-4","2.1.0-5","2.2.0+ds-1","2.2.0+ds-1~exp1","2.2.0+ds-1~exp2","2.2.0+ds-1~exp3","2.2.0+ds-2","2.2.0+ds-3"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-1858.json"}},{"package":{"name":"wget2","ecosystem":"Debian:13","purl":"pkg:deb/debian/wget2?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.2.0+ds-1","2.2.0+ds-1+deb13u1","2.2.0+ds-2","2.2.0+ds-3"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-1858.json"}},{"package":{"name":"wget2","ecosystem":"Debian:14","purl":"pkg:deb/debian/wget2?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.2.0+ds-1","2.2.0+ds-2","2.2.0+ds-3"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-1858.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N"}]}