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Description

TinyMCE 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 via unsanitized data-mce-* attributes (data-mce-href, data-mce-src, data-mce-style). Allows attackers to inject malicious values that override safe attributes during serialization, bypassing validation. This vulnerability is fixed in 5.11.1, 7.9.3, and 8.5.1.

PUBLISHED Reserved 2026-05-19 | Published 2026-05-28 | Updated 2026-05-28 | Assigner GitHub_M




HIGH: 8.7CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N

Problem types

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

Product status

< 5.11.1
affected

>= 6.0.0, <= 6.8.6
affected

>= 7.0.0, < 7.9.3
affected

>= 8.0.0, < 8.5.1
affected

References

github.com/...inymce/security/advisories/GHSA-q742-qvgc-gc2f

www.tiny.cloud/docs/tinymce/7/7.9.3-release-notes/

www.tiny.cloud/docs/tinymce/8/8.5.1-release-notes/

cve.org (CVE-2026-47759)

nvd.nist.gov (CVE-2026-47759)

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