{"id":"CVE-2026-34584","aliases":["EUVD-2026-18450","GHSA-85j8-5c6w-gcpv"],"status":"published","title":"listmonk: Broken Access Control in CSV Import (Unauthorized List Assignment)","description":"listmonk is a standalone, self-hosted, newsletter and mailing list manager. From version 4.1.0 to before version 6.1.0, bugs in list permission checks allows users in a multi-user environment to access to lists (which they don't have access to) under different scenarios. This only affects multi-user environments with untrusted users. This issue has been patched in version 6.1.0.","severity":{"version":"3.1","score":5.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.00178,"percentile":0.07454,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-639"],"published":"2026-04-02T17:31:37Z","modified":"2026-10-28T02:30:20Z","products":[{"vendor":"knadh","product":"listmonk"},{"vendor":"nadh","product":"listmonk"}],"references":[{"url":"https://github.com/knadh/listmonk/security/advisories/GHSA-85j8-5c6w-gcpv","tags":["x_refsource_CONFIRM","Patch","Vendor Advisory","advisory"]},{"url":"https://github.com/knadh/listmonk/commit/347f5976759232c36e571cf58b4bfe33c2794f35","tags":["x_refsource_MISC","Patch","fix"]},{"url":"https://github.com/knadh/listmonk/releases/tag/v6.1.0","tags":["x_refsource_MISC","Product","Release Notes","web"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/34xxx/CVE-2026-34584.json","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-34584","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2026-34584","title":"listmonk: Broken Access Control in CSV Import (Unauthorized List Assignment)","description":"listmonk is a standalone, self-hosted, newsletter and mailing list manager. From version 4.1.0 to before version 6.1.0, bugs in list permission checks allows users in a multi-user environment to access to lists (which they don't have access to) under different scenarios. This only affects multi-user environments with untrusted users. This issue has been patched in version 6.1.0.","status":"published","published":"2026-04-02T17:31:37.615Z","modified":"2026-04-02T19:09:02.06Z","cvss":[{"version":"3.1","score":5.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N","level":"medium","assessor":"cna"}],"cwes":["CWE-639"],"updated_at":"2026-11-02T14:20:14.302133Z"}],"euvd":[{"id":"EUVD-2026-18450","description":"listmonk is a standalone, self-hosted, newsletter and mailing list manager. From version 4.1.0 to before version 6.1.0, bugs in list permission checks allows users in a multi-user environment to access to lists (which they don't have access to) under different scenarios. This only affects multi-user environments with untrusted users. This issue has been patched in version 6.1.0.","status":"published","published":"2026-04-02T17:31:37Z","modified":"2026-04-02T19:09:02Z","cvss":[{"version":"3.1","score":5.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N","level":"medium"}],"updated_at":"2026-11-02T19:25:17.32175Z"}],"nvd":[{"id":"CVE-2026-34584","description":"listmonk is a standalone, self-hosted, newsletter and mailing list manager. From version 4.1.0 to before version 6.1.0, bugs in list permission checks allows users in a multi-user environment to access to lists (which they don't have access to) under different scenarios. This only affects multi-user environments with untrusted users. This issue has been patched in version 6.1.0.","status":"published","published":"2026-04-02T18:16:30.51Z","modified":"2026-07-24T21:10:00.143Z","cvss":[{"version":"3.1","score":5.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N","level":"medium","assessor":"secondary"}],"cwes":["CWE-639"],"updated_at":"2026-11-02T14:12:12.73929Z"}],"osv":[{"id":"CVE-2026-34584","title":"listmonk: Broken Access Control in CSV Import (Unauthorized List Assignment)","description":"listmonk is a standalone, self-hosted, newsletter and mailing list manager. From version 4.1.0 to before version 6.1.0, bugs in list permission checks allows users in a multi-user environment to access to lists (which they don't have access to) under different scenarios. This only affects multi-user environments with untrusted users. This issue has been patched in version 6.1.0.","status":"published","published":"2026-04-02T17:31:37.615Z","modified":"2026-10-28T02:30:20.675741912Z","cvss":[{"version":"3.1","score":5.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N","level":"medium"}],"cwes":["CWE-639"],"updated_at":"2026-11-02T15:45:02.247031Z"}]}}