Home › CVE Intelligence › CVE-2026-47759
CVSS 8.7 HIGH Vulnerability

CVE-2026-47759: TinyMCE Cross-Site Scripting (XSS) vulnerability using through data-mce- prefixed src, hr…

Impact 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, bypassin…

8.7CVSS Score
HIGHSeverity
NOCISA KEV
VulnerabilityImpact Type

📋 Vulnerability Details

CVE IDCVE-2026-47759
Vendornpm
Affected Producttinymce
Vulnerability TypeVulnerability
CVSS Score8.7 (HIGH)
Actively Exploited❌ No known exploitation
Patch StatusSee Vendor Advisory →
Reported ByCYBERDUDEBIVASH SENTINEL APEX Intelligence (via github_advisories)

🔬 Technical Analysis

#

Impact

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.

Patches

Patched by stripping unsafe data-mce-* attributes during parsing. Users should upgrade to the latest patched versions (5 LTS, 7.x, 8.x).

Workarounds

No official workaround available.

Fix

To avoid this vulnerability: Upgrade to TinyMCE 8.5.1 or higher. 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/) contract).

Acknowledgements

Tiny thanks [Tadi Kadango](https://github.com/mtrill47) ([websit

🎯 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} {"type":"url","value":"https://github.com/mtrill47)","confidence_score":0.82,"first_seen":"2026-06-05","source_count":1}

📚 Advisory References

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