CVE-2026-52839

{"id": "CVE-2026-52839", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-52839", "role": "CISA Coordinator", "options": [{"exploitation": "poc"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-07-15T14:48:44.724792Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 3.3, "attackVector": "NETWORK", "baseSeverity": "LOW", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:L/I:L/A:N", "integrityImpact": "LOW", "userInteraction": "NONE", "attackComplexity": "HIGH", "availabilityImpact": "NONE", "privilegesRequired": "HIGH", "confidentialityImpact": "LOW"}, "impactScore": 2.5, "exploitabilityScore": 0.7}]}, "affected": [{"source": "security-advisories@github.com", "affectedData": [{"vendor": "alextselegidis", "product": "easyappointments", "versions": [{"status": "affected", "version": "< 1.6.0"}]}]}], "published": "2026-07-14T16:17:00.540", "references": [{"url": "https://github.com/alextselegidis/easyappointments/commit/4abb10545d83ac1a57d03f6502376ee67696ea7c", "source": "security-advisories@github.com"}, {"url": "https://github.com/alextselegidis/easyappointments/security/advisories/GHSA-w8xc-8g92-v77h", "source": "security-advisories@github.com"}, {"url": "https://github.com/alextselegidis/easyappointments/security/advisories/GHSA-w8xc-8g92-v77h", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"}], "vulnStatus": "Deferred", "weaknesses": [{"type": "Secondary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-639"}, {"lang": "en", "value": "CWE-862"}]}], "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."}], "lastModified": "2026-07-15T16:16:48.083", "sourceIdentifier": "security-advisories@github.com"}