{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-30927", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-03-07T16:40:05.884Z", "datePublished": "2026-03-09T23:03:55.824Z", "dateUpdated": "2026-03-09T23:03:55.824Z"}, "containers": {"cna": {"title": "Admidio: Event participation IDOR - non-leaders can register other users for events via user_uuid parameter", "problemTypes": [{"descriptions": [{"cweId": "CWE-639", "lang": "en", "description": "CWE-639: Authorization Bypass Through User-Controlled Key", "type": "CWE"}]}], "metrics": [{"cvssV4_0": {"attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "LOW", "userInteraction": "NONE", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "LOW", "vulnAvailabilityImpact": "LOW", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "subAvailabilityImpact": "NONE", "baseScore": 5.3, "baseSeverity": "MEDIUM", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N", "version": "4.0"}}], "references": [{"name": "https://github.com/Admidio/admidio/security/advisories/GHSA-7pfv-hr63-h7cw", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/Admidio/admidio/security/advisories/GHSA-7pfv-hr63-h7cw"}, {"name": "https://github.com/Admidio/admidio/issues/1985", "tags": ["x_refsource_MISC"], "url": "https://github.com/Admidio/admidio/issues/1985"}, {"name": "https://github.com/Admidio/admidio/commit/e47f70cc3cbcdb39635fdbaaef02d19f604b8c3e", "tags": ["x_refsource_MISC"], "url": "https://github.com/Admidio/admidio/commit/e47f70cc3cbcdb39635fdbaaef02d19f604b8c3e"}], "affected": [{"vendor": "Admidio", "product": "admidio", "versions": [{"version": "< 5.0.6", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-03-09T23:03:55.824Z"}, "descriptions": [{"lang": "en", "value": "Admidio is an open-source user management solution. Prior to 5.0.6, in modules/events/events_function.php, the event participation logic allows any user who can participate in an event to register OTHER users by manipulating the user_uuid GET parameter. The condition uses || (OR), meaning if possibleToParticipate() returns true (event is open for participation), ANY user - not just leaders - can specify a different user_uuid and register/cancel participation for that user. The code then operates on $user->getValue('usr_id') (the target user from user_uuid) rather than the current user. This vulnerability is fixed in 5.0.6."}], "source": {"advisory": "GHSA-7pfv-hr63-h7cw", "discovery": "UNKNOWN"}}}}

{}

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{}