TinyMCE Cross-Site Scripting (XSS) vulnerability using media plugin `data-mce-object` injection

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Summary

CVECVE-2026-47761
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-05-28 16:16:28 UTC
Updated2026-05-28 19:18:37 UTC
DescriptionTinyMCE is an open source rich text editor. Prior to 5.11.1, 7.9.3, and 8.5.1, there is a stored XSS vulnerability in the media plugin. Attackers can inject malicious scripts via crafted data-mce-* attributes, which are executed when content is rendered. Impacts users of TinyMCE with the media plugin enabled. This vulnerability is fixed in 5.11.1, 7.9.3, and 8.5.1.

Risk And Classification

Primary CVSS: v3.1 5.4 MEDIUM from [email protected]

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Problem Types: CWE-79 | CWE-79 CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

VersionSourceTypeScoreSeverityVector
3.1[email protected]Primary5.4MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
3.1[email protected]Secondary8.7HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N
3.1CNADECLARED8.7HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
Required
Scope
Changed
Confidentiality
Low
Integrity
Low
Availability
None

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Tiny Tinymce All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Tinymce Tinymce affected < 5.11.1 Not specified
CNA Tinymce Tinymce affected >= 6.0.0, <= 6.8.6 Not specified
CNA Tinymce Tinymce affected >= 7.0.0, < 7.9.3 Not specified
CNA Tinymce Tinymce affected >= 8.0.0, < 8.5.1 Not specified

References

ReferenceSourceLinkTags
www.tiny.cloud/docs/tinymce/7/7.9.3-release-notes [email protected] www.tiny.cloud Release Notes
github.com/tinymce/tinymce/security/advisories/GHSA-vg35-5wq7-3x7w [email protected] github.com Patch, Vendor Advisory
www.tiny.cloud/docs/tinymce/8/8.5.1-release-notes [email protected] www.tiny.cloud Release Notes
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis
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