{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-45266","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","state":"PUBLISHED","assignerShortName":"GitHub_M","dateReserved":"2026-05-11T18:41:13.156Z","datePublished":"2026-06-01T16:39:56.879Z","dateUpdated":"2026-06-01T17:40:19.878Z"},"containers":{"cna":{"title":"Nextcloud: Unauthorized force-mute from missing permission check when using internal signaling","problemTypes":[{"descriptions":[{"cweId":"CWE-284","lang":"en","description":"CWE-284: Improper Access Control","type":"CWE"}]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":3.5,"baseSeverity":"LOW","confidentialityImpact":"NONE","integrityImpact":"LOW","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N","version":"3.1"}}],"references":[{"name":"https://github.com/nextcloud/security-advisories/security/advisories/GHSA-x75r-65hm-cw35","tags":["x_refsource_CONFIRM"],"url":"https://github.com/nextcloud/security-advisories/security/advisories/GHSA-x75r-65hm-cw35"},{"name":"https://github.com/nextcloud/spreed/pull/17577","tags":["x_refsource_MISC"],"url":"https://github.com/nextcloud/spreed/pull/17577"},{"name":"https://hackerone.com/reports/3636758","tags":["x_refsource_MISC"],"url":"https://hackerone.com/reports/3636758"}],"affected":[{"vendor":"nextcloud","product":"security-advisories","versions":[{"version":"< 21.1.10","status":"affected"},{"version":"< 22.0.11","status":"affected"},{"version":"< 23.0.3","status":"affected"}]}],"providerMetadata":{"orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M","dateUpdated":"2026-06-01T16:39:56.879Z"},"descriptions":[{"lang":"en","value":"Nextcloud is an open source content collaboration platform. Prior to versions 21.1.10, 22.0.11, and 23.0.3, a low-privileged user can force other user's microphones to be muted in calls when no High-performance Backend is installed. This issue has been patched in versions 21.1.10, 22.0.11, and 23.0.3."}],"source":{"advisory":"GHSA-x75r-65hm-cw35","discovery":"UNKNOWN"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-06-01T17:35:39.122672Z","id":"CVE-2026-45266","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":"2026-06-01T17:40:19.878Z"}}]}}