{"id":"CVE-2026-116675","state":"PUBLISHED","title":"TinyMCE Cross-Site Scripting (XSS) vulnerability using media plugin `data-mce-object` serialization","description":"TinyMCE is an open source rich text editor. From 7.9.3 until 7.9.4 and from 8.5.1 until 8.9.3, the media plugin creates elements crafted through data-mce-object in the active document before sanitization. Those elements can execute malicious scripts during processing, resulting in stored cross-site scripting for users with the media plugin enabled. This issue is fixed in versions 8.9.3 and 7.9.4.","publishedAt":"2026-10-27T16:47:01.183Z","updatedAt":"2026-10-28T16:15:12.999Z","severity":{"score":8.5,"label":"High","version":"4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N","source":"GitHub_M"},"assigner":"GitHub_M","products":["tinymce tinymce"],"affected":[{"vendor":"tinymce","product":"tinymce","versions":[{"version":">= 8.5.1, < 8.9.3","status":"affected"},{"version":">= 7.9.3, < 7.9.4","status":"affected"}]}],"references":["https://github.com/tinymce/tinymce/security/advisories/GHSA-mf2p-h6hf-fcwm","https://github.com/tinymce/tinymce/commit/bd1ab5ef024c648c3f9c0b409e54a6c227c7d8a2","https://github.com/tinymce/tinymce/releases/tag/8.9.3","https://www.tiny.cloud/docs/tinymce/7/7.9.4-release-notes/#overview","https://www.tiny.cloud/docs/tinymce/latest/8.9.3-release-notes/#overview"],"weaknesses":["CWE-79"],"ingestedAt":"2026-10-29T20:10:43.281Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/116xxx/CVE-2026-116675.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-116675","state":"PUBLISHED","datePublished":"2026-10-27T16:47:01.183Z","dateUpdated":"2026-10-28T16:15:12.999Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-10-26T20:00:59.829Z"},"containers":{"cna":{"title":"TinyMCE Cross-Site Scripting (XSS) vulnerability using media plugin `data-mce-object` serialization","descriptions":[{"lang":"en","value":"TinyMCE is an open source rich text editor. From 7.9.3 until 7.9.4 and from 8.5.1 until 8.9.3, the media plugin creates elements crafted through data-mce-object in the active document before sanitization. Those elements can execute malicious scripts during processing, resulting in stored cross-site scripting for users with the media plugin enabled. This issue is fixed in versions 8.9.3 and 7.9.4."}],"affected":[{"vendor":"tinymce","product":"tinymce","versions":[{"version":">= 8.5.1, < 8.9.3","status":"affected"},{"version":">= 7.9.3, < 7.9.4","status":"affected"}]}],"references":[{"url":"https://github.com/tinymce/tinymce/security/advisories/GHSA-mf2p-h6hf-fcwm","name":"https://github.com/tinymce/tinymce/security/advisories/GHSA-mf2p-h6hf-fcwm","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/tinymce/tinymce/commit/bd1ab5ef024c648c3f9c0b409e54a6c227c7d8a2","name":"https://github.com/tinymce/tinymce/commit/bd1ab5ef024c648c3f9c0b409e54a6c227c7d8a2","tags":["x_refsource_MISC"]},{"url":"https://github.com/tinymce/tinymce/releases/tag/8.9.3","name":"https://github.com/tinymce/tinymce/releases/tag/8.9.3","tags":["x_refsource_MISC"]},{"url":"https://www.tiny.cloud/docs/tinymce/7/7.9.4-release-notes/#overview","name":"https://www.tiny.cloud/docs/tinymce/7/7.9.4-release-notes/#overview","tags":["x_refsource_MISC"]},{"url":"https://www.tiny.cloud/docs/tinymce/latest/8.9.3-release-notes/#overview","name":"https://www.tiny.cloud/docs/tinymce/latest/8.9.3-release-notes/#overview","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV4_0":{"attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"LOW","userInteraction":"PASSIVE","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"HIGH","vulnAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","baseScore":8.5,"baseSeverity":"HIGH","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N","version":"4.0"}}],"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":"2026-10-27T16:47:01.183Z"},"source":{"advisory":"GHSA-mf2p-h6hf-fcwm","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-10-28T14:58:13.313387Z","id":"CVE-2026-116675","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-10-28T16:15:12.999Z"}}]}}}