{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2025-66512","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","state":"PUBLISHED","assignerShortName":"GitHub_M","dateReserved":"2025-12-03T15:28:02.992Z","datePublished":"2025-12-05T16:22:50.206Z","dateUpdated":"2025-12-05T20:05:05.069Z"},"containers":{"cna":{"title":"Nextcloud Server vulnerable to XSS in SVG images when opened outside of Nextcloud","problemTypes":[{"descriptions":[{"cweId":"CWE-80","lang":"en","description":"CWE-80: Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS)","type":"CWE"}]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"LOW","baseScore":5.4,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"LOW","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:L","version":"3.1"}}],"references":[{"name":"https://github.com/nextcloud/security-advisories/security/advisories/GHSA-qcw2-p26m-9gc5","tags":["x_refsource_CONFIRM"],"url":"https://github.com/nextcloud/security-advisories/security/advisories/GHSA-qcw2-p26m-9gc5"},{"name":"https://github.com/nextcloud/viewer/pull/3023","tags":["x_refsource_MISC"],"url":"https://github.com/nextcloud/viewer/pull/3023"},{"name":"https://github.com/nextcloud/viewer/commit/5044a27d61bc40c0f134298d36af91f865335b63","tags":["x_refsource_MISC"],"url":"https://github.com/nextcloud/viewer/commit/5044a27d61bc40c0f134298d36af91f865335b63"},{"name":"https://hackerone.com/reports/3357808","tags":["x_refsource_MISC"],"url":"https://hackerone.com/reports/3357808"}],"affected":[{"vendor":"nextcloud","product":"security-advisories","versions":[{"version":">= 32.0.0beta1, < 32.0.3","status":"affected"},{"version":"< 31.0.12","status":"affected"}]}],"providerMetadata":{"orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M","dateUpdated":"2025-12-05T16:22:50.206Z"},"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."}],"source":{"advisory":"GHSA-qcw2-p26m-9gc5","discovery":"UNKNOWN"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2025-12-05T20:04:51.050053Z","id":"CVE-2025-66512","options":[{"Exploitation":"none"},{"Automatable":"no"},{"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":"2025-12-05T20:05:05.069Z"}}]}}