CVE-2026-47761: TinyMCE Cross-Site Scripting (XSS) vulnerability using media plugin `data-mce-object` inj…

Impact 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 en…

8.7CVSS Score

HIGHSeverity

NOCISA KEV

VulnerabilityImpact Type

📋 Vulnerability Details

CVE ID	CVE-2026-47761
Vendor	npm
Affected Product	tinymce
Vulnerability Type	Vulnerability
CVSS Score	8.7 (HIGH)
Actively Exploited	❌ No known exploitation
Patch Status	See Vendor Advisory →
Reported By	CYBERDUDEBIVASH SENTINEL APEX Intelligence (via github_advisories)

🔬 Technical Analysis

Impact

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.

Patches

This vulnerability has been patched in TinyMCE 8.5.1, TinyMCE 7.9.3 and TinyMCE 5.11.1 LTS by ensuring that, when using the media plugin, any content with data-mce-object and data-mce-p-* attributes are properly sanitized.

Workarounds

No official workaround available.

Fix

• Upgrade to TinyMCE 7.9.3 or higher.

• Upgrade to TinyMCE 5.11.1 LTS or higher for TinyMCE 5.x (only available as part of commercial [long-term support](https://www.tiny.cloud/long-term-support/) contr

To avoid this vulnerability: - Upgrade to TinyMCE 8.5.1 or higher.

🎯 Known Indicators of Compromise

{"type":"url","value":"https://www.tiny.cloud/long-term-support/)","confidence_score":0.82,"first_seen":"2026-06-05","source_count":1}

📚 Advisory References

⚡ DETECTION RULES AVAILABLE

Get CVE-2026-47761 Detection Pack

Sigma rules, YARA signatures, IOC table, and SIEM queries for Splunk, Elastic, Sentinel, and Chronicle — deployable in 5 minutes.

✓ Sigma Rules ✓ YARA Pack ✓ IOC Table ✓ SIEM Queries

🛡️ Get Detection Pack → 🔌 Access via API →