{"id":"CVE-2026-110928","aliases":["BELL-CVE-2026-110928","DEBIAN-CVE-2026-110928","UBUNTU-CVE-2026-110928"],"status":"published","description":"authorized_keys restrict does not apply to tunnel forwarding","facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"published":"2026-10-16T06:05:37.224923Z","modified":"2026-10-30T03:06:21Z","fixes":[{"ecosystem":"Alpaquita:23","package":"openssh","fixed_in":["9.1_p1-r16"],"sources":["osv"]},{"ecosystem":"Alpaquita:25","package":"openssh","fixed_in":["10.6_p1-r0"],"sources":["osv"]},{"ecosystem":"Alpaquita:stream","package":"openssh","fixed_in":["10.6_p1-r0"],"sources":["osv"]},{"ecosystem":"BellSoft Hardened Containers:23","package":"openssh","fixed_in":["9.1_p1-r16"],"sources":["osv"]},{"ecosystem":"BellSoft Hardened Containers:25","package":"openssh","fixed_in":["10.6_p1-r0"],"sources":["osv"]},{"ecosystem":"BellSoft Hardened Containers:stream","package":"openssh","fixed_in":["10.6_p1-r0"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Alpaquita:23","package":"openssh","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"9.1_p1-r3"},{"fixed":"9.1_p1-r16"}]}]},{"source":"osv","ecosystem":"Alpaquita:25","package":"openssh","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"10.0_p1-r7"},{"fixed":"10.6_p1-r0"}]}]},{"source":"osv","ecosystem":"Alpaquita:stream","package":"openssh","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"9.3_p1-r7"},{"fixed":"10.6_p1-r0"}]}]},{"source":"osv","ecosystem":"BellSoft Hardened Containers:23","package":"openssh","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"9.1_p1-r3"},{"fixed":"9.1_p1-r16"}]}]},{"source":"osv","ecosystem":"BellSoft Hardened Containers:25","package":"openssh","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"10.0_p1-r7"},{"fixed":"10.6_p1-r0"}]}]},{"source":"osv","ecosystem":"BellSoft Hardened Containers:stream","package":"openssh","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"9.3_p1-r7"},{"fixed":"10.6_p1-r0"}]}]},{"source":"osv","ecosystem":"Debian:12","package":"openssh","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:10.0p1-1","1:10.0p1-2","1:10.0p1-3","1:10.0p1-4","1:10.0p1-5","1:10.0p1-5~bpo12+2","1:10.0p1-6","1:10.0p1-7","1:10.0p1-7~bpo12+1","1:10.0p1-8","1:10.1p1-1","1:10.1p1-2","1:10.2p1-1","1:10.2p1-2","1:10.2p1-2~bpo13+1","1:10.2p1-3","1:10.2p1-4","1:10.2p1-5","1:10.2p1-6","1:10.2p1-6~bpo13+1","1:10.3p1-1","1:10.3p1-1~bpo13+1","1:10.3p1-2","1:10.3p1-3","1:10.3p1-4","1:10.3p1-5","1:10.3p1-7","1:10.3p1-8","1:10.3p1-9","1:10.4p1-1","1:10.4p1-2","1:10.4p1-3","1:10.4p1-4","1:10.4p1-5","1:10.5p1-1","1:10.6p1-1","1:9.2p1-2","1:9.2p1-2+deb12u1","1:9.2p1-2+deb12u10","1:9.2p1-2+deb12u2","1:9.2p1-2+deb12u3","1:9.2p1-2+deb12u4","1:9.2p1-2+deb12u5","1:9.2p1-2+deb12u6","1:9.2p1-2+deb12u7","1:9.2p1-2+deb12u8","1:9.2p1-2+deb12u9","1:9.3p1-1","1:9.3p1-1+loong64","1:9.3p2-1","1:9.4p1-1","1:9.5p1-1","1:9.5p1-2","1:9.6p1-1","1:9.6p1-2","1:9.6p1-3","1:9.6p1-4","1:9.6p1-5","1:9.7p1-1","1:9.7p1-2","1:9.7p1-3","1:9.7p1-3+hurd.1","1:9.7p1-4","1:9.7p1-5","1:9.7p1-6","1:9.7p1-7","1:9.8p1-1","1:9.8p1-2","1:9.8p1-3","1:9.8p1-4","1:9.8p1-7","1:9.8p1-8","1:9.9p1-1","1:9.9p1-2","1:9.9p1-3","1:9.9p1-3+hurd.1","1:9.9p2-1","1:9.9p2-2"]},{"source":"osv","ecosystem":"Debian:13","package":"openssh","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:10.0p1-7","1:10.0p1-7+deb13u1","1:10.0p1-7+deb13u2","1:10.0p1-7+deb13u3","1:10.0p1-7+deb13u4","1:10.0p1-8","1:10.1p1-1","1:10.1p1-2","1:10.2p1-1","1:10.2p1-2","1:10.2p1-2~bpo13+1","1:10.2p1-3","1:10.2p1-4","1:10.2p1-5","1:10.2p1-6","1:10.2p1-6~bpo13+1","1:10.3p1-1","1:10.3p1-1~bpo13+1","1:10.3p1-2","1:10.3p1-3","1:10.3p1-4","1:10.3p1-5","1:10.3p1-7","1:10.3p1-8","1:10.3p1-9","1:10.4p1-1","1:10.4p1-2","1:10.4p1-3","1:10.4p1-4","1:10.4p1-5","1:10.5p1-1","1:10.6p1-1"]},{"source":"osv","ecosystem":"Debian:14","package":"openssh","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:10.0p1-7","1:10.0p1-8","1:10.1p1-1","1:10.1p1-2","1:10.2p1-1","1:10.2p1-2","1:10.2p1-2~bpo13+1","1:10.2p1-3","1:10.2p1-4","1:10.2p1-5","1:10.2p1-6","1:10.2p1-6~bpo13+1","1:10.3p1-1","1:10.3p1-1~bpo13+1","1:10.3p1-2","1:10.3p1-3","1:10.3p1-4","1:10.3p1-5","1:10.3p1-7","1:10.3p1-8","1:10.3p1-9","1:10.4p1-1","1:10.4p1-2","1:10.4p1-3","1:10.4p1-4","1:10.4p1-5","1:10.5p1-1","1:10.6p1-1"]},{"source":"osv","ecosystem":"Ubuntu:Pro:14.04:LTS","package":"openssh","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:6.2p2-6","1:6.2p2-6ubuntu1","1:6.4p1-1","1:6.4p1-2","1:6.5p1-1","1:6.5p1-2","1:6.5p1-3","1:6.5p1-4","1:6.5p1-6","1:6.6p1-1","1:6.6p1-2","1:6.6p1-2ubuntu1","1:6.6p1-2ubuntu2","1:6.6p1-2ubuntu2.2","1:6.6p1-2ubuntu2.3","1:6.6p1-2ubuntu2.4","1:6.6p1-2ubuntu2.6","1:6.6p1-2ubuntu2.7","1:6.6p1-2ubuntu2.8","1:6.6p1-2ubuntu2.10","1:6.6p1-2ubuntu2.11","1:6.6p1-2ubuntu2.12","1:6.6p1-2ubuntu2.13","1:6.6p1-2ubuntu2.13+esm1","1:6.6p1-2ubuntu2.13+esm2","1:6.6p1-2ubuntu2.13+esm3","1:6.6p1-2ubuntu2.13+esm4"]},{"source":"osv","ecosystem":"Ubuntu:Pro:16.04:LTS","package":"openssh","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:6.9p1-2","1:6.9p1-3","1:7.1p1-1","1:7.1p1-3","1:7.1p1-4","1:7.1p1-6","1:7.1p2-1","1:7.1p2-2","1:7.2p1-1","1:7.2p2-1","1:7.2p2-2","1:7.2p2-3","1:7.2p2-4","1:7.2p2-4ubuntu1","1:7.2p2-4ubuntu2.1","1:7.2p2-4ubuntu2.2","1:7.2p2-4ubuntu2.4","1:7.2p2-4ubuntu2.5","1:7.2p2-4ubuntu2.6","1:7.2p2-4ubuntu2.7","1:7.2p2-4ubuntu2.8","1:7.2p2-4ubuntu2.10","1:7.2p2-4ubuntu2.10+esm1","1:7.2p2-4ubuntu2.10+esm2","1:7.2p2-4ubuntu2.10+esm3","1:7.2p2-4ubuntu2.10+esm4","1:7.2p2-4ubuntu2.10+esm5","1:7.2p2-4ubuntu2.10+esm6","1:7.2p2-4ubuntu2.10+esm7","1:7.2p2-4ubuntu2.10+esm8","1:7.2p2-4ubuntu2.10+esm9","1:7.2p2-4ubuntu2.10+esm10"]},{"source":"osv","ecosystem":"Ubuntu:Pro:FIPS-updates:16.04:LTS","package":"openssh","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:7.2p2-4ubuntu2.fips.2.2.3","1:7.2p2-4ubuntu2.fips.2.4.1","1:7.2p2-4ubuntu2.fips.2.4.2","1:7.2p2-4ubuntu2.fips.2.8.1","1:7.2p2-4ubuntu2.fips.2.10.1","1:7.2p2-4ubuntu2.fips.2.10.2","1:7.2p2-4ubuntu2.fips.2.10.3","1:7.2p2-4ubuntu2.fips.2.10.4","1:7.2p2-4ubuntu2.fips.2.10.5","1:7.2p2-4ubuntu2.fips.2.10.6","1:7.2p2-4ubuntu2.fips.2.10.7"]},{"source":"osv","ecosystem":"Ubuntu:Pro:FIPS:16.04:LTS","package":"openssh","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:7.2p2-4ubuntu2.fips.2.2","1:7.2p2-4ubuntu2.fips.2.2.1","1:7.2p2-4ubuntu2.fips.2.10.1"]},{"source":"osv","ecosystem":"Ubuntu:Pro:18.04:LTS","package":"openssh","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:7.5p1-10","1:7.6p1-4","1:7.6p1-4ubuntu0.1","1:7.6p1-4ubuntu0.2","1:7.6p1-4ubuntu0.3","1:7.6p1-4ubuntu0.5","1:7.6p1-4ubuntu0.6","1:7.6p1-4ubuntu0.7","1:7.6p1-4ubuntu0.7+esm1","1:7.6p1-4ubuntu0.7+esm2","1:7.6p1-4ubuntu0.7+esm3","1:7.6p1-4ubuntu0.7+esm4","1:7.6p1-4ubuntu0.7+esm5","1:7.6p1-4ubuntu0.7+esm6"]},{"source":"osv","ecosystem":"Ubuntu:18.04:LTS","package":"openssh-ssh1","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:7.5p1-8","1:7.5p1-9","1:7.5p1-9build1","1:7.5p1-10"]},{"source":"osv","ecosystem":"Ubuntu:Pro:FIPS-updates:18.04:LTS","package":"openssh","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:7.9p1-10~ubuntu18.04.fips.0.1","1:7.9p1-10~ubuntu18.04.fips.0.2","1:7.9p1-10~ubuntu18.04.fips.0.3","1:7.9p1-10~ubuntu18.04.fips.0.4","1:7.9p1-10~ubuntu18.04.fips.0.5","1:7.9p1-10~ubuntu18.04.fips.0.6","1:7.9p1-10~ubuntu18.04.fips.0.7","1:7.9p1-10~ubuntu18.04.fips.0.8","1:7.9p1-10~ubuntu18.04.fips.0.9","1:7.9p1-10~ubuntu18.04.fips.0.10"]},{"source":"osv","ecosystem":"Ubuntu:Pro:FIPS:18.04:LTS","package":"openssh","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:7.9p1-10~ubuntu18.04.fips.0.1","1:7.9p1-10~ubuntu18.04.fips.0.2"]},{"source":"osv","ecosystem":"Ubuntu:Pro:20.04:LTS","package":"openssh","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:8.0p1-6build1","1:8.1p1-1","1:8.1p1-5","1:8.2p1-4","1:8.2p1-4ubuntu0.1","1:8.2p1-4ubuntu0.2","1:8.2p1-4ubuntu0.3","1:8.2p1-4ubuntu0.4","1:8.2p1-4ubuntu0.5","1:8.2p1-4ubuntu0.7","1:8.2p1-4ubuntu0.8","1:8.2p1-4ubuntu0.9","1:8.2p1-4ubuntu0.10","1:8.2p1-4ubuntu0.11","1:8.2p1-4ubuntu0.12","1:8.2p1-4ubuntu0.13","1:8.2p1-4ubuntu0.13+esm1","1:8.2p1-4ubuntu0.13+esm2","1:8.2p1-4ubuntu0.13+esm3"]},{"source":"osv","ecosystem":"Ubuntu:20.04:LTS","package":"openssh-ssh1","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:7.5p1-11build1"]},{"source":"osv","ecosystem":"Ubuntu:Pro:FIPS-updates:20.04:LTS","package":"openssh","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:8.2p1-4ubuntu0.fips.0.2.1","1:8.2p1-4ubuntu0.fips.0.4.0","1:8.2p1-4ubuntu0.fips.0.5.0","1:8.2p1-4ubuntu0.fips.0.7","1:8.2p1-4ubuntu0.fips.0.8","1:8.2p1-4ubuntu0.fips.0.9","1:8.2p1-4ubuntu0.fips.0.10","1:8.2p1-4ubuntu0.fips.0.11","1:8.2p1-4ubuntu0.fips.0.12","1:8.2p1-4ubuntu0.fips.0.13","1:8.2p1-4ubuntu0.fips.0.13.1","1:8.2p1-4ubuntu0.fips.0.13.3"]},{"source":"osv","ecosystem":"Ubuntu:Pro:FIPS:20.04:LTS","package":"openssh","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:8.2p1-4ubuntu0.fips.0.2.1"]},{"source":"osv","ecosystem":"Ubuntu:22.04:LTS","package":"openssh","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:8.4p1-6ubuntu2","1:8.7p1-2","1:8.7p1-2build1","1:8.7p1-4","1:8.8p1-1","1:8.9p1-3","1:8.9p1-3ubuntu0.1","1:8.9p1-3ubuntu0.3","1:8.9p1-3ubuntu0.4","1:8.9p1-3ubuntu0.5","1:8.9p1-3ubuntu0.6","1:8.9p1-3ubuntu0.7","1:8.9p1-3ubuntu0.10","1:8.9p1-3ubuntu0.11","1:8.9p1-3ubuntu0.13","1:8.9p1-3ubuntu0.14","1:8.9p1-3ubuntu0.15","1:8.9p1-3ubuntu0.16","1:8.9p1-3ubuntu0.17","1:8.9p1-3ubuntu0.18"]},{"source":"osv","ecosystem":"Ubuntu:22.04:LTS","package":"openssh-ssh1","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:7.5p1-12","1:7.5p1-12build1","1:7.5p1-13"]},{"source":"osv","ecosystem":"Ubuntu:Pro:FIPS-preview:22.04:LTS","package":"openssh","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:8.9p1-3ubuntu0.4+Fips1","1:8.9p1-3ubuntu0.4+Fips3","1:8.9p1-3ubuntu1.fips.0~ppa3"]},{"source":"osv","ecosystem":"Ubuntu:Pro:FIPS-updates:22.04:LTS","package":"openssh","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:8.9p1-3ubuntu0.4+Fips1","1:8.9p1-3ubuntu0.4+Fips3","1:8.9p1-3ubuntu0.6+Fips1","1:8.9p1-3ubuntu0.7+Fips1","1:8.9p1-3ubuntu0.10+Fips1","1:8.9p1-3ubuntu0.11+Fips1","1:8.9p1-3ubuntu0.13+Fips1","1:8.9p1-3ubuntu0.14+Fips1","1:8.9p1-3ubuntu0.15+Fips1","1:8.9p1-3ubuntu0.15+Fips3","1:8.9p1-3ubuntu0.16+Fips3","1:8.9p1-3ubuntu0.18+Fips1","1:8.9p1-3ubuntu1.fips.0~ppa3"]},{"source":"osv","ecosystem":"Ubuntu:24.04:LTS","package":"openssh","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:9.3p1-1ubuntu3","1:9.4p1-1ubuntu1","1:9.6p1-3ubuntu1","1:9.6p1-3ubuntu2","1:9.6p1-3ubuntu11","1:9.6p1-3ubuntu12","1:9.6p1-3ubuntu13","1:9.6p1-3ubuntu13.3","1:9.6p1-3ubuntu13.4","1:9.6p1-3ubuntu13.5","1:9.6p1-3ubuntu13.7","1:9.6p1-3ubuntu13.8","1:9.6p1-3ubuntu13.9","1:9.6p1-3ubuntu13.11","1:9.6p1-3ubuntu13.12","1:9.6p1-3ubuntu13.13","1:9.6p1-3ubuntu13.14","1:9.6p1-3ubuntu13.15","1:9.6p1-3ubuntu13.16","1:9.6p1-3ubuntu13.18","1:9.6p1-3ubuntu13.19","1:9.6p1-3ubuntu13.20"]},{"source":"osv","ecosystem":"Ubuntu:24.04:LTS","package":"openssh-ssh1","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:7.5p1-14","1:7.5p1-15","1:7.5p1-15build1","1:7.5p1-16"]},{"source":"osv","ecosystem":"Ubuntu:Pro:FIPS-updates:24.04:LTS","package":"openssh","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:9.6p1-3ubuntu13.7+Fips1","1:9.6p1-3ubuntu13.12+Fips1","1:9.6p1-3ubuntu13.13+Fips1","1:9.6p1-3ubuntu13.14+Fips1","1:9.6p1-3ubuntu13.15+Fips1","1:9.6p1-3ubuntu13.16+Fips1","1:9.6p1-3ubuntu13.16+Fips2","1:9.6p1-3ubuntu13.18+Fips1","1:9.6p1-3ubuntu13.19+Fips1","1:9.6p1-3ubuntu13.20+Fips1"]},{"source":"osv","ecosystem":"Ubuntu:26.10","package":"openssh","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:10.2p1-2ubuntu3","1:10.3p1-4ubuntu1","1:10.3p1-4ubuntu2","1:10.5p1-1ubuntu2","1:10.5p1-1ubuntu3.1"]},{"source":"osv","ecosystem":"Ubuntu:26.10","package":"openssh-gssapi","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:10.5p1-1ubuntu1","1:10.5p1-1ubuntu2","1:10.5p1-1ubuntu3","1:10.5p1-1ubuntu3.1"]},{"source":"osv","ecosystem":"Ubuntu:26.10","package":"openssh-ssh1","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:7.5p1-18","1:7.5p1-18ubuntu1","1:7.5p1-18ubuntu2"]},{"source":"osv","ecosystem":"Ubuntu:26.04:LTS","package":"openssh","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:10.0p1-5ubuntu5","1:10.2p1-2ubuntu1","1:10.2p1-2ubuntu3","1:10.2p1-2ubuntu3.2","1:10.2p1-2ubuntu3.4","1:10.2p1-2ubuntu3.5","1:10.2p1-2ubuntu3.6","1:10.2p1-2ubuntu3.7","1:10.2p1-2ubuntu3.8"]},{"source":"osv","ecosystem":"Ubuntu:26.04:LTS","package":"openssh-ssh1","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:7.5p1-17","1:7.5p1-18"]}],"references":[{"url":"https://docs.bell-sw.com/security/cves/CVE-2026-110928","tags":["advisory"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2026-110928","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2026-110928","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-110928","tags":["report"]}],"sources":{"osv":[{"id":"BELL-CVE-2026-110928","status":"published","published":"2026-10-16T06:05:37.224923Z","modified":"2026-10-21T07:15:05.27529658Z","updated_at":"2026-11-02T15:28:23.037038Z"},{"id":"DEBIAN-CVE-2026-110928","status":"published","published":"2026-10-26T07:47:40.540576819Z","modified":"2026-10-26T08:00:08.20237816Z","updated_at":"2026-11-02T15:45:49.824149Z"},{"id":"UBUNTU-CVE-2026-110928","description":"authorized_keys restrict does not apply to tunnel forwarding","status":"published","published":"2026-10-28T00:00:00Z","modified":"2026-10-30T03:06:21.160262882Z","updated_at":"2026-11-02T16:55:59.591851Z"}]}}
