{"id":"CVE-2026-42562","aliases":["EUVD-2026-28929","GHSA-pvfv-wvpm-q6f6"],"status":"published","title":"Plainpad: Privilege Escalation via Writable Admin Field in Profile Update (Access Control)","description":"Plainpad is a self hosted note taking app. Prior to version 1.1.1, Plainpad allows a low-privilege authenticated user to self-escalate to administrator by submitting admin=true in PUT /api.php/v1/users/{id}. The endpoint directly persists the admin attribute from user input, and the escalated account can immediately access admin-only routes. This issue has been patched in version 1.1.1.","severity":{"version":"3.1","score":8.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.00261,"percentile":0.1792,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-269"],"published":"2026-05-09T19:09:48Z","modified":"2026-10-28T02:31:04Z","products":[{"vendor":"alextselegidis","product":"plainpad"}],"references":[{"url":"https://github.com/alextselegidis/plainpad/security/advisories/GHSA-pvfv-wvpm-q6f6","tags":["x_refsource_CONFIRM","advisory"]},{"url":"https://github.com/alextselegidis/plainpad/issues/138","tags":["x_refsource_MISC","report"]},{"url":"https://github.com/alextselegidis/plainpad/commit/9216a876d27b22c3d9259551636d803f7cb075fc","tags":["x_refsource_MISC","fix"]},{"url":"https://github.com/alextselegidis/plainpad/releases/tag/1.1.1","tags":["x_refsource_MISC","web"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/42xxx/CVE-2026-42562.json","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-42562","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2026-42562","title":"Plainpad: Privilege Escalation via Writable Admin Field in Profile Update (Access Control)","description":"Plainpad is a self hosted note taking app. Prior to version 1.1.1, Plainpad allows a low-privilege authenticated user to self-escalate to administrator by submitting admin=true in PUT /api.php/v1/users/{id}. The endpoint directly persists the admin attribute from user input, and the escalated account can immediately access admin-only routes. This issue has been patched in version 1.1.1.","status":"published","published":"2026-05-09T19:09:48.862Z","modified":"2026-05-11T14:50:20.63Z","cvss":[{"version":"3.1","score":8.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L","level":"high","assessor":"cna"}],"cwes":["CWE-269"],"updated_at":"2026-11-02T13:40:23.731501Z"}],"euvd":[{"id":"EUVD-2026-28929","description":"Plainpad is a self hosted note taking app. Prior to version 1.1.1, Plainpad allows a low-privilege authenticated user to self-escalate to administrator by submitting admin=true in PUT /api.php/v1/users/{id}. The endpoint directly persists the admin attribute from user input, and the escalated account can immediately access admin-only routes. This issue has been patched in version 1.1.1.","status":"published","published":"2026-05-09T19:09:48Z","modified":"2026-05-11T14:50:20Z","cvss":[{"version":"3.1","score":8.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L","level":"high"}],"updated_at":"2026-11-02T19:05:11.205633Z"}],"nvd":[{"id":"CVE-2026-42562","description":"Plainpad is a self hosted note taking app. Prior to version 1.1.1, Plainpad allows a low-privilege authenticated user to self-escalate to administrator by submitting admin=true in PUT /api.php/v1/users/{id}. The endpoint directly persists the admin attribute from user input, and the escalated account can immediately access admin-only routes. This issue has been patched in version 1.1.1.","status":"published","published":"2026-05-09T20:16:28.933Z","modified":"2026-07-24T21:10:00.143Z","cvss":[{"version":"3.1","score":8.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L","level":"high","assessor":"secondary"}],"cwes":["CWE-269"],"updated_at":"2026-11-02T14:12:18.239974Z"}],"osv":[{"id":"CVE-2026-42562","title":"Plainpad: Privilege Escalation via Writable Admin Field in Profile Update (Access Control)","description":"Plainpad is a self hosted note taking app. Prior to version 1.1.1, Plainpad allows a low-privilege authenticated user to self-escalate to administrator by submitting admin=true in PUT /api.php/v1/users/{id}. The endpoint directly persists the admin attribute from user input, and the escalated account can immediately access admin-only routes. This issue has been patched in version 1.1.1.","status":"published","published":"2026-05-09T19:09:48.862Z","modified":"2026-10-28T02:31:04.761030141Z","cvss":[{"version":"3.1","score":8.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L","level":"high"}],"cwes":["CWE-269"],"updated_at":"2026-11-02T15:45:04.117819Z"}]}}