{"id":"CVE-2026-91142","published":"2026-09-18T17:17:05.283","lastModified":"2026-09-18T19:06:08.407","description":"A flaw was found in Cockpit. An integer overflow vulnerability in the `do_lastlog()` function, specifically in the offset calculation for `lastlog` entries on ILP32 (Integer, Long, Pointer 32-bit) builds, can be exploited. A low-privileged authenticated user with a specially provisioned large User ID (UID) can cause the computed offset to wrap around. This allows the user to perform unauthorized reads and writes to other users' `lastlog` records, potentially disclosing or altering sensitive login accounting information.","cvssScore":3.6,"cvssSeverity":"LOW","cvssVector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N","cwes":["CWE-787"],"vendors":[],"products":[],"references":[{"url":"https://access.redhat.com/security/cve/CVE-2026-91142","tags":[]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2479459","tags":[]}],"exploitRefs":[],"hasPoc":false,"ai":null}