{"id":"CVE-2026-34584","state":"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.","publishedAt":"2026-04-02T17:31:37.615Z","updatedAt":"2026-04-02T19:09:02.060Z","severity":{"score":5.4,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N","source":"GitHub_M"},"assigner":"GitHub_M","products":["knadh listmonk"],"affected":[{"vendor":"knadh","product":"listmonk","versions":[{"version":">= 4.1.0, < 6.1.0","status":"affected"}]}],"references":["https://github.com/knadh/listmonk/security/advisories/GHSA-85j8-5c6w-gcpv","https://github.com/knadh/listmonk/commit/347f5976759232c36e571cf58b4bfe33c2794f35","https://github.com/knadh/listmonk/releases/tag/v6.1.0"],"weaknesses":["CWE-639"],"ingestedAt":"2026-10-29T20:11:40.391Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/34xxx/CVE-2026-34584.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-34584","state":"PUBLISHED","datePublished":"2026-04-02T17:31:37.615Z","dateUpdated":"2026-04-02T19:09:02.060Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-03-30T16:56:30.999Z"},"containers":{"cna":{"title":"listmonk: Broken Access Control in CSV Import (Unauthorized List Assignment)","descriptions":[{"lang":"en","value":"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."}],"affected":[{"vendor":"knadh","product":"listmonk","versions":[{"version":">= 4.1.0, < 6.1.0","status":"affected"}]}],"references":[{"url":"https://github.com/knadh/listmonk/security/advisories/GHSA-85j8-5c6w-gcpv","name":"https://github.com/knadh/listmonk/security/advisories/GHSA-85j8-5c6w-gcpv","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/knadh/listmonk/commit/347f5976759232c36e571cf58b4bfe33c2794f35","name":"https://github.com/knadh/listmonk/commit/347f5976759232c36e571cf58b4bfe33c2794f35","tags":["x_refsource_MISC"]},{"url":"https://github.com/knadh/listmonk/releases/tag/v6.1.0","name":"https://github.com/knadh/listmonk/releases/tag/v6.1.0","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":5.4,"baseSeverity":"MEDIUM","confidentialityImpact":"LOW","integrityImpact":"LOW","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-639","lang":"en","description":"CWE-639: Authorization Bypass Through User-Controlled Key","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-04-02T17:31:37.615Z"},"source":{"advisory":"GHSA-85j8-5c6w-gcpv","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-04-02T19:08:49.596406Z","id":"CVE-2026-34584","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-04-02T19:09:02.060Z"}}]}}}