Cyber Resilience

CVE-2026-47759

HighUpdated

Published: 28 May 2026

Published
28 May 2026
Modified
17 June 2026
KEV Added
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Patch
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CVSS Score v3.1 8.7 CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N
EPSS Score 0.0024 14.8th percentile
Risk Priority 55 floored blend · peak EPSS

Summary

CVE-2026-47759 is a high-severity Cross-site Scripting (CWE-79) vulnerability in Tiny Tinymce. Its CVSS base score is 8.7 (High).

Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked at the 14.8th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

OWASP Top 10 for Web (2025)

A05:2025 Injection

EU & UK References

Vulnerability details

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…

more

validation. This vulnerability is fixed in 5.11.1, 7.9.3, and 8.5.1.

CWE(s)
CWE-79

Related Threats

MITRE ATT&CK Enterprise TechniquesAI

T1190 Exploit Public-Facing Application Initial Access
Adversaries may attempt to exploit a weakness in an Internet-facing host or system to initially access a network.
attack.mitre.org →
T1059.007 JavaScript Execution
Adversaries may abuse various implementations of JavaScript for execution.
attack.mitre.org →
Why these techniques?

Stored XSS enables arbitrary JS execution in web apps (T1059.007) and direct exploitation of public-facing applications using the editor (T1190).

Confidence: HIGH · MITRE ATT&CK Enterprise v19.0

CVEs Like This One

CVE-2026-47762Same product: Tiny Tinymce
CVE-2026-47761Same product: Tiny Tinymce
CVE-2026-47760Same product: Tiny Tinymce
CVE-2025-26907Shared CWE-79
CVE-2025-69084Shared CWE-79
CVE-2025-69048Shared CWE-79
CVE-2025-22567Shared CWE-79
CVE-2025-69324Shared CWE-79
CVE-2026-1841Shared CWE-79
CVE-2025-26588Shared CWE-79

Affected Assets

tiny
tinymce
≤ 5.11.1 · 6.0.0 — 7.9.3 · 8.0.0 — 8.5.1

Mitigating Controls

Likely Mitigating Controls AI

Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.

CA-8 Penetration Testing
addresses: CWE-79

Penetration testing submits XSS payloads to web applications, detecting cross-site scripting flaws for subsequent remediation.

SI-10 Information Input Validation
addresses: CWE-79

Validates web inputs to reject script-related content that could produce XSS.

SI-15 Information Output Filtering
addresses: CWE-79

Output validation against expected content can reject or sanitize script content in generated web pages, reducing XSS exploitability.

References