{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-41657","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","state":"PUBLISHED","assignerShortName":"GitHub_M","dateReserved":"2026-04-21T23:58:43.803Z","datePublished":"2026-05-07T02:58:09.340Z","dateUpdated":"2026-05-07T12:44:25.356Z"},"containers":{"cna":{"title":"Admidio: Cross-Organization Member Data Exposure via Permission Check Mismatch in contacts_data.php","problemTypes":[{"descriptions":[{"cweId":"CWE-863","lang":"en","description":"CWE-863: Incorrect Authorization","type":"CWE"}]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":4.9,"baseSeverity":"MEDIUM","confidentialityImpact":"HIGH","integrityImpact":"NONE","privilegesRequired":"HIGH","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N","version":"3.1"}}],"references":[{"name":"https://github.com/Admidio/admidio/security/advisories/GHSA-g8p8-94f2-28gr","tags":["x_refsource_CONFIRM"],"url":"https://github.com/Admidio/admidio/security/advisories/GHSA-g8p8-94f2-28gr"},{"name":"https://github.com/Admidio/admidio/releases/tag/v5.0.9","tags":["x_refsource_MISC"],"url":"https://github.com/Admidio/admidio/releases/tag/v5.0.9"}],"affected":[{"vendor":"Admidio","product":"admidio","versions":[{"version":"< 5.0.9","status":"affected"}]}],"providerMetadata":{"orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M","dateUpdated":"2026-05-07T02:58:09.340Z"},"descriptions":[{"lang":"en","value":"Admidio is an open-source user management solution. Prior to version 5.0.9, the contacts_data.php endpoint uses a weaker permission check (isAdministratorUsers(), requiring only rol_edit_user=true) than the frontend UI (contacts.php) which correctly requires the stronger isAdministrator() (requiring rol_administrator=true) and the contacts_show_all system setting. A user manager who is not a full administrator can directly request contacts_data.php?mem_show_filter=3 to retrieve all user records across all organizations in the Admidio instance, bypassing multi-tenant organization isolation. This issue has been patched in version 5.0.9."}],"source":{"advisory":"GHSA-g8p8-94f2-28gr","discovery":"UNKNOWN"}},"adp":[{"references":[{"url":"https://github.com/Admidio/admidio/security/advisories/GHSA-g8p8-94f2-28gr","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-05-07T12:44:19.418128Z","id":"CVE-2026-41657","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-05-07T12:44:25.356Z"}}]}}