{"id":"CVE-2026-55596","state":"PUBLISHED","title":"Plate: Media embed provider metadata can bypass URL sanitization and execute iframe JavaScript","description":"Plate is a rich-text editor with AI and shadcn/ui. From 53.0.0 until 53.1.4, the media embed renderer trusts serialized provider or sourceUrl metadata in useMediaState and skips parseMediaUrl protocol validation, allowing a crafted Plate document to set a known video provider while keeping url as a javascript: iframe source that the registry MediaEmbedElement renders directly as an iframe src when a victim opens the document. This issue is fixed in version 53.1.4.","publishedAt":"2026-07-08T20:27:58.987Z","updatedAt":"2026-07-09T13:41:00.054Z","severity":{"score":8.7,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N","source":"GitHub_M"},"assigner":"GitHub_M","products":["udecode plate"],"affected":[{"vendor":"udecode","product":"plate","versions":[{"version":">= 53.0.0, < 53.1.4","status":"affected"}]}],"references":["https://github.com/udecode/plate/security/advisories/GHSA-qj6x-xx2h-8hvv","https://github.com/udecode/plate/pull/5014","https://github.com/udecode/plate/commit/6214914ca811adf22d0ad503154494216eed68ba","https://github.com/udecode/plate/releases/tag/v53.1.4"],"weaknesses":["CWE-79"],"ingestedAt":"2026-10-29T20:12:24.861Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/55xxx/CVE-2026-55596.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-55596","state":"PUBLISHED","datePublished":"2026-07-08T20:27:58.987Z","dateUpdated":"2026-07-09T13:41:00.054Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-06-16T23:18:03.170Z"},"containers":{"cna":{"title":"Plate: Media embed provider metadata can bypass URL sanitization and execute iframe JavaScript","descriptions":[{"lang":"en","value":"Plate is a rich-text editor with AI and shadcn/ui. From 53.0.0 until 53.1.4, the media embed renderer trusts serialized provider or sourceUrl metadata in useMediaState and skips parseMediaUrl protocol validation, allowing a crafted Plate document to set a known video provider while keeping url as a javascript: iframe source that the registry MediaEmbedElement renders directly as an iframe src when a victim opens the document. This issue is fixed in version 53.1.4."}],"affected":[{"vendor":"udecode","product":"plate","versions":[{"version":">= 53.0.0, < 53.1.4","status":"affected"}]}],"references":[{"url":"https://github.com/udecode/plate/security/advisories/GHSA-qj6x-xx2h-8hvv","name":"https://github.com/udecode/plate/security/advisories/GHSA-qj6x-xx2h-8hvv","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/udecode/plate/pull/5014","name":"https://github.com/udecode/plate/pull/5014","tags":["x_refsource_MISC"]},{"url":"https://github.com/udecode/plate/commit/6214914ca811adf22d0ad503154494216eed68ba","name":"https://github.com/udecode/plate/commit/6214914ca811adf22d0ad503154494216eed68ba","tags":["x_refsource_MISC"]},{"url":"https://github.com/udecode/plate/releases/tag/v53.1.4","name":"https://github.com/udecode/plate/releases/tag/v53.1.4","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":8.7,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"LOW","scope":"CHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-79","lang":"en","description":"CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-07-08T20:27:58.987Z"},"source":{"advisory":"GHSA-qj6x-xx2h-8hvv","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","references":[{"url":"https://github.com/udecode/plate/security/advisories/GHSA-qj6x-xx2h-8hvv","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-07-09T13:40:39.729677Z","id":"CVE-2026-55596","options":[{"Exploitation":"poc"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-07-09T13:41:00.054Z"}}]}}}