{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2025-66557", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2025-12-04T16:01:32.473Z", "datePublished": "2025-12-05T17:28:48.642Z", "dateUpdated": "2025-12-05T17:28:48.642Z"}, "containers": {"cna": {"title": "Nextcloud Deck app allowed user with \"Can share\" permission to modify permissions of other non-owners", "problemTypes": [{"descriptions": [{"cweId": "CWE-284", "lang": "en", "description": "CWE-284: Improper Access Control", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 5.4, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "LOW", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L", "version": "3.1"}}], "references": [{"name": "https://github.com/nextcloud/security-advisories/security/advisories/GHSA-wwr8-hx9g-rjvv", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/nextcloud/security-advisories/security/advisories/GHSA-wwr8-hx9g-rjvv"}, {"name": "https://github.com/nextcloud/deck/pull/7131", "tags": ["x_refsource_MISC"], "url": "https://github.com/nextcloud/deck/pull/7131"}, {"name": "https://github.com/nextcloud/deck/commit/f1da8b30a455f02373d44154da04494c949a95ae", "tags": ["x_refsource_MISC"], "url": "https://github.com/nextcloud/deck/commit/f1da8b30a455f02373d44154da04494c949a95ae"}, {"name": "https://hackerone.com/reports/3247499", "tags": ["x_refsource_MISC"], "url": "https://hackerone.com/reports/3247499"}], "affected": [{"vendor": "nextcloud", "product": "security-advisories", "versions": [{"version": ">= 1.15.0-beta.1, < 1.15.2", "status": "affected"}, {"version": "< 1.14.6", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2025-12-05T17:28:48.642Z"}, "descriptions": [{"lang": "en", "value": "Nextcloud Deck is a kanban style organization tool aimed at personal planning and project organization for teams integrated with Nextcloud. Prior to 1.14.6 and 1.15.2, a bug in the permission logic allowed users with \"Can share\" permission to modify the permissions of other recipients. This vulnerability is fixed in 1.14.6 and 1.15.2."}], "source": {"advisory": "GHSA-wwr8-hx9g-rjvv", "discovery": "UNKNOWN"}}}}

{}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "Nextcloud Deck is a kanban style organization tool aimed at personal planning and project organization for teams integrated with Nextcloud. Prior to 1.14.6 and 1.15.2, a bug in the permission logic allowed users with \"Can share\" permission to modify the permissions of other recipients. This vulnerability is fixed in 1.14.6 and 1.15.2."}], "id": "CVE-2025-66557", "lastModified": "2025-12-05T18:15:58.977", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 5.4, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "LOW", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 2.5, "source": "security-advisories@github.com", "type": "Secondary"}]}, "published": "2025-12-05T18:15:58.977", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/nextcloud/deck/commit/f1da8b30a455f02373d44154da04494c949a95ae"}, {"source": "security-advisories@github.com", "url": "https://github.com/nextcloud/deck/pull/7131"}, {"source": "security-advisories@github.com", "url": "https://github.com/nextcloud/security-advisories/security/advisories/GHSA-wwr8-hx9g-rjvv"}, {"source": "security-advisories@github.com", "url": "https://hackerone.com/reports/3247499"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-284"}], "source": "security-advisories@github.com", "type": "Primary"}]}

{}

{}