CVE-2025-66512

{"id": "CVE-2025-66512", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.4, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:L", "integrityImpact": "LOW", "userInteraction": "REQUIRED", "attackComplexity": "LOW", "availabilityImpact": "LOW", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 2.5, "exploitabilityScore": 2.8}, {"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "CHANGED", "version": "3.1", "baseScore": 6.1, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N", "integrityImpact": "LOW", "userInteraction": "REQUIRED", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "LOW"}, "impactScore": 2.7, "exploitabilityScore": 2.8}]}, "published": "2025-12-05T17:16:04.980", "references": [{"url": "https://github.com/nextcloud/security-advisories/security/advisories/GHSA-qcw2-p26m-9gc5", "tags": ["Patch", "Vendor Advisory"], "source": "security-advisories@github.com"}, {"url": "https://github.com/nextcloud/viewer/commit/5044a27d61bc40c0f134298d36af91f865335b63", "tags": ["Patch"], "source": "security-advisories@github.com"}, {"url": "https://github.com/nextcloud/viewer/pull/3023", "tags": ["Issue Tracking"], "source": "security-advisories@github.com"}, {"url": "https://hackerone.com/reports/3357808", "tags": ["Issue Tracking", "Vendor Advisory"], "source": "security-advisories@github.com"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-80"}]}, {"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-79"}]}], "descriptions": [{"lang": "en", "value": "Nextcloud Server is a self hosted personal cloud system. In Nextcloud Server and Server Enterprise prior to 31.0.12 and 32.0.3, a missing sanitization allowed malicious users to circumvent the content security policy when a malicious user manages to trick a user it viewing an uploaded SVG outside of the Nextcloud Servers web page."}], "lastModified": "2025-12-09T16:38:19.160", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:-:*:*:*", "vulnerable": true, "matchCriteriaId": "A6FF62FC-BAAC-42FE-80AA-1ECF1752D9D4", "versionEndExcluding": "31.0.12", "versionStartIncluding": "31.0.0"}, {"criteria": "cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:enterprise:*:*:*", "vulnerable": true, "matchCriteriaId": "EE1373FF-E182-4502-AFA0-CB4191CBC1A3", "versionEndExcluding": "31.0.12", "versionStartIncluding": "31.0.0"}, {"criteria": "cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:-:*:*:*", "vulnerable": true, "matchCriteriaId": "B6B91E03-3683-47A0-8D5D-8F463D1957F2", "versionEndExcluding": "32.0.3", "versionStartIncluding": "32.0.0"}, {"criteria": "cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:enterprise:*:*:*", "vulnerable": true, "matchCriteriaId": "88F735F3-E164-4261-A5D8-8F32DB2AA218", "versionEndExcluding": "32.0.3", "versionStartIncluding": "32.0.0"}], "operator": "OR"}]}], "sourceIdentifier": "security-advisories@github.com"}