CVE-2026-47759CWE-79cross-site-scripting

CVE-2026-47759

High · published May 28, 2026

CVSS v3.1
8.7
EPSS
0%
Percentile
19.6
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
8.7 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N
CVSS v4.0
Not supplied
EPSS
0.00281 · 19.6th percentile
Weakness
CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Published
2026-05-28T20:16Z
Affected products (3)
ProductVersionsFixed in
tiny/tinymce< 5.11.15.11.1
tiny/tinymce≥ 6.0.0, < 7.9.37.9.3
tiny/tinymce≥ 8.0.0, < 8.5.18.5.1
References (3)
https://github.com/tinymce/tinymce/security/advisories/GHSA-q742-qvgc-gc2f · [email protected]https://www.tiny.cloud/docs/tinymce/7/7.9.3-release-notes/#overview · [email protected]https://www.tiny.cloud/docs/tinymce/8/8.5.1-release-notes/#overview · [email protected]
EPSS history
Timeline
  • 28 MAY 15:20Z
    TinyMCE Cross-Site Scripting (XSS) vulnerability using through data-mce- prefixed src, href, style attributes
    cvelistv5