CVE-2026-47759

highCVSS 8.7covered by 1 sourcefirst seen 2026-06-05

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 contract). Acknowledgements Tiny thanks Tadi Kadango (website) and Ivan Babenko for their help identifying this vulnerability.

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Exploitation outlook

Low exploitation risk0.28% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 20% of all EPSS-scored CVEs.

Advisory coverage (1)

highGHSA-q742-qvgc-gc2f: TinyMCE Cross-Site Scripting (XSS) vulnerability using through data-mce- prefixed src, hr…ghsa · 2026-06-05

External references

NVD record for CVE-2026-47759

CVE.org record

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