Medium severity · published May 28, 2026
CVE-2026-47759
TinyMCE Cross-Site Scripting (XSS) vulnerability using through data-mce- prefixed src, href, style attributes
5.4
CVSS
0.3%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
Required
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 21% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
TI
tinymce · tinymce
< 5.11.1; >= 6.0.0, <= 6.8.6; >= 7.0.0, < 7.9.3; >= 8.0.0, < 8.5.1 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-47759
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-47759
Patch
https://github.com/tinymce/tinymce/security/advisories/GHSA-q742-qvgc-gc2f
Release Notes
https://www.tiny.cloud/docs/tinymce/7/7.9.3-release-notes/#overview
Release Notes
https://www.tiny.cloud/docs/tinymce/8/8.5.1-release-notes/#overview
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