{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-45543", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-05-12T17:48:47.879Z", "datePublished": "2026-06-01T17:00:48.861Z", "dateUpdated": "2026-06-01T19:33:14.762Z"}, "containers": {"cna": {"title": "Nextcloud: Deleting a Forms collaborator share leaves uploaded response files accessible through a lingering Files share", "problemTypes": [{"descriptions": [{"cweId": "CWE-552", "lang": "en", "description": "CWE-552: Files or Directories Accessible to External Parties", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 5.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N", "version": "3.1"}}], "references": [{"name": "https://github.com/nextcloud/security-advisories/security/advisories/GHSA-q4fw-6jf8-5vhh", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/nextcloud/security-advisories/security/advisories/GHSA-q4fw-6jf8-5vhh"}, {"name": "https://github.com/nextcloud/forms/pull/3291", "tags": ["x_refsource_MISC"], "url": "https://github.com/nextcloud/forms/pull/3291"}, {"name": "https://hackerone.com/reports/3617352", "tags": ["x_refsource_MISC"], "url": "https://hackerone.com/reports/3617352"}], "affected": [{"vendor": "nextcloud", "product": "security-advisories", "versions": [{"version": ">= 4.3.0, < 5.2.7", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-06-01T17:00:48.861Z"}, "descriptions": [{"lang": "en", "value": "Nextcloud is an open source content collaboration platform. From version 4.3.0 to before version 5.2.7, a removed collaborator retains unauthorized read access to uploaded respondent files for the affected form. The scope is limited to uploaded files for forms where that user previously had results access. This issue has been patched in version 5.2.7."}], "source": {"advisory": "GHSA-q4fw-6jf8-5vhh", "discovery": "UNKNOWN"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-06-01T19:33:00.290011Z", "id": "CVE-2026-45543", "options": [{"Exploitation": "none"}, {"Automatable": "yes"}, {"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": "2026-06-01T19:33:14.762Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-45543", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "yes"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-06-01T19:33:00.290011Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-06-01T19:33:08.492Z"}}], "cna": {"title": "Nextcloud: Deleting a Forms collaborator share leaves uploaded response files accessible through a lingering Files share", "source": {"advisory": "GHSA-q4fw-6jf8-5vhh", "discovery": "UNKNOWN"}, "metrics": [{"cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.3, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "LOW"}}], "affected": [{"vendor": "nextcloud", "product": "security-advisories", "versions": [{"status": "affected", "version": ">= 4.3.0, < 5.2.7"}]}], "references": [{"url": "https://github.com/nextcloud/security-advisories/security/advisories/GHSA-q4fw-6jf8-5vhh", "name": "https://github.com/nextcloud/security-advisories/security/advisories/GHSA-q4fw-6jf8-5vhh", "tags": ["x_refsource_CONFIRM"]}, {"url": "https://github.com/nextcloud/forms/pull/3291", "name": "https://github.com/nextcloud/forms/pull/3291", "tags": ["x_refsource_MISC"]}, {"url": "https://hackerone.com/reports/3617352", "name": "https://hackerone.com/reports/3617352", "tags": ["x_refsource_MISC"]}], "descriptions": [{"lang": "en", "value": "Nextcloud is an open source content collaboration platform. From version 4.3.0 to before version 5.2.7, a removed collaborator retains unauthorized read access to uploaded respondent files for the affected form. The scope is limited to uploaded files for forms where that user previously had results access. This issue has been patched in version 5.2.7."}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-552", "description": "CWE-552: Files or Directories Accessible to External Parties"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-06-01T17:00:48.861Z"}}}, "cveMetadata": {"cveId": "CVE-2026-45543", "state": "PUBLISHED", "dateUpdated": "2026-06-01T19:33:14.762Z", "dateReserved": "2026-05-12T17:48:47.879Z", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "datePublished": "2026-06-01T17:00:48.861Z", "assignerShortName": "GitHub_M"}, "dataVersion": "5.2"}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "Nextcloud is an open source content collaboration platform. From version 4.3.0 to before version 5.2.7, a removed collaborator retains unauthorized read access to uploaded respondent files for the affected form. The scope is limited to uploaded files for forms where that user previously had results access. This issue has been patched in version 5.2.7."}], "id": "CVE-2026-45543", "lastModified": "2026-06-01T19:16:51.707", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 5.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 1.4, "source": "security-advisories@github.com", "type": "Secondary"}]}, "published": "2026-06-01T19:16:51.707", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/nextcloud/forms/pull/3291"}, {"source": "security-advisories@github.com", "url": "https://github.com/nextcloud/security-advisories/security/advisories/GHSA-q4fw-6jf8-5vhh"}, {"source": "security-advisories@github.com", "url": "https://hackerone.com/reports/3617352"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-552"}], "source": "security-advisories@github.com", "type": "Primary"}]}

{}

{"created": "2026-06-01T21:45:22.618158+00:00", "updated": "2026-06-01T21:45:22.618169+00:00", "vendors": []}