{"id":"CVE-2026-91142","aliases":["DEBIAN-CVE-2026-91142","EUVD-2026-83176","GHSA-2f43-vjp7-v3qj","UBUNTU-CVE-2026-91142"],"status":"published","title":"Cockpit: cockpit: unauthorized modification of login records via integer overflow","description":"A flaw was found in Cockpit. An authenticated local user with a large user identifier (UID) can cause unauthorized modification and disclosure of login records. 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hat","product":"red hat enterprise linux 10"},{"vendor":"red hat","product":"red hat enterprise linux 7"},{"vendor":"red hat","product":"red hat enterprise linux 8"},{"vendor":"red hat","product":"red hat enterprise linux 9"},{"vendor":"red hat","product":"red hat openshift dev spaces"}],"references":[{"url":"https://access.redhat.com/security/cve/CVE-2026-91142","tags":["vdb-entry","x_refsource_REDHAT","report"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2479459","tags":["issue-tracking","x_refsource_REDHAT","report"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-91142"},{"url":"https://github.com/advisories/GHSA-2f43-vjp7-v3qj"},{"url":"https://security-tracker.debian.org/tracker/CVE-2026-91142","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2026-91142","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-91142","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2026-91142","title":"Cockpit: cockpit: unauthorized modification of login records via integer overflow","description":"A flaw was found in Cockpit. An authenticated local user with a large user identifier (UID) can cause unauthorized modification and disclosure of login records. On 32-bit systems, an integer overflow during session accounting allows the user's login process to read or overwrite the legacy log entries of other accounts.","status":"published","published":"2026-09-18T16:44:09.465Z","modified":"2026-11-06T19:56:13.106Z","cvss":[{"version":"3.1","score":3.6,"vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N","level":"low","assessor":"cna"}],"cwes":["CWE-190"],"updated_at":"2026-11-06T20:30:05.375225Z"}],"euvd":[{"id":"EUVD-2026-83176","description":"A flaw was found in Cockpit. An authenticated local user with a large user identifier (UID) can cause unauthorized modification and disclosure of login records. On 32-bit systems, an integer overflow during session accounting allows the user's login process to read or overwrite the legacy log entries of other accounts.","status":"published","published":"2026-09-18T16:44:09Z","modified":"2026-11-06T19:56:13Z","cvss":[{"version":"3.1","score":3.6,"vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N","level":"low"}],"updated_at":"2026-11-06T21:07:00.111123Z"}],"ghsa":[{"id":"GHSA-2f43-vjp7-v3qj","title":"A flaw was found in Cockpit. An integer overflow vulnerability in the `do_lastlog()` function,...","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.","status":"published","published":"2026-09-18T18:31:43Z","modified":"2026-10-16T18:33:05Z","cvss":[{"version":"3.1","score":3.6,"vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N","level":"low"}],"cwes":["CWE-190","CWE-787"],"updated_at":"2026-11-02T15:13:51.736258Z"}],"nvd":[{"id":"CVE-2026-91142","description":"A flaw was found in Cockpit. An authenticated local user with a large user identifier (UID) can cause unauthorized modification and disclosure of login records. 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On 32-bit systems, an integer overflow during session accounting allows the user's login process to read or overwrite the legacy log entries of other accounts.","status":"published","published":"2026-09-18T17:17:00Z","modified":"2026-10-28T20:17:36.313347894Z","cvss":[{"version":"3.1","score":3.6,"vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N","level":"low"}],"updated_at":"2026-11-02T16:57:40.980117Z"}]}}