{"id":"DEBIAN-CVE-2026-11837","details":"A local privilege escalation vulnerability was found in the ansible.posix authorized_key module. The module's keyfile() function uses os.chown() instead of os.lchown() and opens files without O_NOFOLLOW when managing SSH authorized keys. An unprivileged local user can pre-stage symbolic links in their ~/.ssh directory to redirect file ownership changes to arbitrary system paths when an operator runs the authorized_key task as root, leading to local privilege escalation.","modified":"2026-09-10T08:47:28.899111071Z","published":"2026-06-10T05:16:38.510Z","upstream":["CVE-2026-11837"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2026-11837"}],"affected":[{"package":{"name":"ansible","ecosystem":"Debian:12","purl":"pkg:deb/debian/ansible?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["10.0.0+dfsg-1","10.0.1+dfsg-1","10.1.0+dfsg-1","10.5.0+dfsg-1","10.5.0+dfsg-2","10.6.0+dfsg-1","11.1.0+dfsg-1","11.2.0+dfsg-1","12.0.0+dfsg-1","12.0.0~a1+dfsg-1","12.0.0~a2+dfsg-1","12.0.0~a4+dfsg-1","12.0.0~a6+dfsg-1","12.0.0~b1+dfsg-1","12.0.0~b2+dfsg-1","12.0.0~b3+dfsg-1","12.0.0~b5+dfsg-1","12.2.0+dfsg-1","13.1.0+dfsg-1","13.4.0+dfsg-1","14.0.0+dfsg-1","14.0.0~a4+dfsg-1","7.3.0+dfsg-1","7.7.0+dfsg-1","7.7.0+dfsg-2","7.7.0+dfsg-3","7.7.0+dfsg-3+deb12u1","9.4.0+dfsg-1","9.5.1+dfsg-1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-11837.json"}},{"package":{"name":"ansible","ecosystem":"Debian:13","purl":"pkg:deb/debian/ansible?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["12.0.0+dfsg-0+deb13u1","12.0.0+dfsg-1","12.0.0~a6+dfsg-1","12.0.0~b1+dfsg-1","12.0.0~b2+dfsg-1","12.0.0~b3+dfsg-1","12.0.0~b5+dfsg-0+deb13u1","12.0.0~b5+dfsg-1","12.2.0+dfsg-1","13.1.0+dfsg-1","13.4.0+dfsg-1","14.0.0+dfsg-1","14.0.0~a4+dfsg-1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-11837.json"}},{"package":{"name":"ansible","ecosystem":"Debian:14","purl":"pkg:deb/debian/ansible?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["12.0.0+dfsg-1","12.0.0~a6+dfsg-1","12.0.0~b1+dfsg-1","12.0.0~b2+dfsg-1","12.0.0~b3+dfsg-1","12.0.0~b5+dfsg-1","12.2.0+dfsg-1","13.1.0+dfsg-1","13.4.0+dfsg-1","14.0.0+dfsg-1","14.0.0~a4+dfsg-1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-11837.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H"}]}