{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-52839","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","state":"PUBLISHED","assignerShortName":"GitHub_M","dateReserved":"2026-06-08T18:41:27.724Z","datePublished":"2026-07-14T15:21:23.199Z","dateUpdated":"2026-07-29T16:25:59.689Z"},"containers":{"cna":{"title":"Easy!Appointments appointments/store and appointments/update allow cross-provider appointment injection — Authorization Bypass","problemTypes":[{"descriptions":[{"cweId":"CWE-639","lang":"en","description":"CWE-639: Authorization Bypass Through User-Controlled Key","type":"CWE"}]},{"descriptions":[{"cweId":"CWE-862","lang":"en","description":"CWE-862: Missing Authorization","type":"CWE"}]}],"metrics":[{"cvssV3_1":{"attackComplexity":"HIGH","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":3.3,"baseSeverity":"LOW","confidentialityImpact":"LOW","integrityImpact":"LOW","privilegesRequired":"HIGH","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:L/I:L/A:N","version":"3.1"}}],"references":[{"name":"https://github.com/alextselegidis/easyappointments/security/advisories/GHSA-w8xc-8g92-v77h","tags":["x_refsource_CONFIRM"],"url":"https://github.com/alextselegidis/easyappointments/security/advisories/GHSA-w8xc-8g92-v77h"},{"name":"https://github.com/alextselegidis/easyappointments/commit/725eafa647308846ce887657db12771a829e42ef","tags":["x_refsource_MISC"],"url":"https://github.com/alextselegidis/easyappointments/commit/725eafa647308846ce887657db12771a829e42ef"}],"affected":[{"vendor":"alextselegidis","product":"easyappointments","versions":[{"version":"< 1.6.0","status":"affected"}]}],"providerMetadata":{"orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M","dateUpdated":"2026-07-29T16:25:59.689Z"},"descriptions":[{"lang":"en","value":"Easy!Appointments is a self hosted appointment scheduler. Versions prior to 1.6.0 correctly filter provider-scoped appointments in the `appointments/search` response, proving that provider isolation is an intended security boundary. However, the direct mutation endpoints `appointments/store` and `appointments/update` only check generic appointment privileges and never verify that the submitted `id_users_provider` belongs to the current session. A normal authenticated provider can inject new appointments into another provider's schedule via `store`, or reassign existing appointments into a foreign provider's calendar via `update`. The `store` path contains an additional write-before-crash bug: the unauthorized row is committed to the database before the controller crashes on a type error, so the attacker receives an error response while the foreign appointment is already persisted. Version 1.6.0 patches the issue."}],"source":{"advisory":"GHSA-w8xc-8g92-v77h","discovery":"UNKNOWN"}},"adp":[{"references":[{"url":"https://github.com/alextselegidis/easyappointments/security/advisories/GHSA-w8xc-8g92-v77h","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-07-15T14:48:44.724792Z","id":"CVE-2026-52839","options":[{"Exploitation":"poc"},{"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":"2026-07-15T14:51:02.293Z"}}]}}