High 8.7Published May 28, 2026

CVE-2026-47759TinyMCE Cross-Site Scripting (XSS) vulnerability using through data-mce- prefixed src, href, style attributes

Updated under an hour ago (Oct 27, 2026, 2:00 AM ET)

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It affects tinymce and 1 other product. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Exploited in the last 30 days

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: 8.7 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N
Weakness (CWE): CWE-79
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: GitHub_M
NVD analysis: Analyzed
Record last updated: May 29, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

tinymce tinymce tinymce:tinymce (from the name)	before 5.11.1; from 6.0.0, <= 6.8.6; from 7.0.0, < 7.9.3; from 8.0.0, < 8.5.1	CNA record
tiny tinymce tiny:tinymce	before 5.11.1; from 6.0.0 before 7.9.3; from 8.0.0 before 8.5.1	NVD

References

References

https://github.com/tinymce/tinymce/security/advisories/GHSA-q742-qvgc-gc2f	x-refsource-confirm, patch, vendor-advisory
https://www.tiny.cloud/docs/tinymce/7/7.9.3-release-notes/#overview	x-refsource-misc, release-notes
https://www.tiny.cloud/docs/tinymce/8/8.5.1-release-notes/#overview	x-refsource-misc, release-notes

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.