{"id":"CVE-2026-3888","summary":"Local Privilege Escalation in snapd","details":"Local privilege escalation in snapd on Linux allows local attackers to get root privilege by re-creating snap's private /tmp directory when systemd-tmpfiles is configured to automatically clean up this directory. This issue affects Ubuntu 16.04 LTS, 18.04 LTS, 20.04 LTS, 22.04 LTS, and 24.04 LTS.","modified":"2026-07-08T08:12:59.963588080Z","published":"2026-03-17T14:02:08.475Z","database_specific":{"cwe_ids":["CWE-268"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/3xxx/CVE-2026-3888.json","cna_assigner":"canonical"},"references":[{"type":"WEB","url":"http://www.openwall.com/lists/oss-security/2026/03/18/1"},{"type":"WEB","url":"https://github.com/canonical"},{"type":"WEB","url":"https://github.com/canonical/snapd/"},{"type":"WEB","url":"https://launchpad.net/ubuntu/+source/snapd"},{"type":"WEB","url":"https://launchpad.net/ubuntu/bionic"},{"type":"WEB","url":"https://launchpad.net/ubuntu/focal"},{"type":"WEB","url":"https://launchpad.net/ubuntu/jammy"},{"type":"WEB","url":"https://launchpad.net/ubuntu/noble"},{"type":"WEB","url":"https://launchpad.net/ubuntu/xenial"},{"type":"ADVISORY","url":"https://cdn2.qualys.com/advisory/2026/03/17/snap-confine-systemd-tmpfiles.txt"},{"type":"ADVISORY","url":"https://discourse.ubuntu.com/t/snapd-local-privilege-escalation-cve-2026-3888"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/3xxx/CVE-2026-3888.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-3888"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-8102-1"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-3888"},{"type":"ARTICLE","url":"https://blog.qualys.com/vulnerabilities-threat-research/2026/03/17/cve-2026-3888-important-snap-flaw-enables-local-privilege-escalation-to-root"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/canonical/snapd","events":[{"introduced":"0"},{"fixed":"4f16c3f0664575cf915b5727684d249f6e00bcc6"}],"database_specific":{"extracted_events":[{"introduced":"0"},{"fixed":"2.75.1"}],"source":"AFFECTED_FIELD"}}],"versions":["2.75","untagged-ec50ee5bfb45daefc236","2.15.2","2.15","2.14.2.16.04","2.14.1","2.14","2.13","2.12","2.11","2.0.10","2.0.9","2.0.8","2.0.7","2.0.6","2.0.5","2.0.4","2.0.3","2.0","1.9.4","1.9.3","1.9.2","1.9.1","1.9","ppa","1.7.3+20160310ubuntu1","1.7.3+20160308ubuntu1","1.7.3+20160303ubuntu4","1.7.3+20160303ubuntu3","1.7.3+20160303ubuntu2","1.7.3+20160303ubuntu1","1.7.3+20160225ubuntu1","1.7.2+20160223ubuntu1","1.7.2+20160204ubuntu1","1.7.2+20160113ubuntu1","1.7.2ubuntu1","1.7ubuntu1","1.6ubuntu1","1.5ubuntu1","1.4ubuntu1","1.3ubuntu1","1.2-0ubuntu1","1.1.2-0ubuntu1","1.1.1-0ubuntu1","1.1-0ubuntu1","1.0.1-0ubuntu1","1.0-0ubuntu1"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-3888.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H"}]}