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

Quick assessment

Affected
tinymce tinymce
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Tiny Technologies TinyMCE是美国Tiny Technologies公司的一款富文本编辑器。 TinyMCE 5.11.1之前版本、7.9.3之前版本和8.5.1之前版本存在跨站脚本漏洞，该漏洞源于未清理的data-mce-*属性可能导致存储型XSS攻击，攻击者可以注入恶意值覆盖安全属性，绕过验证。

CVSS 8.7 · High EPSS 0.28% · P20

Affected Version Matrix 4

VendorProduct Version RangeStatus
tinymce tinymce < 5.11.1 affected
>= 6.0.0, <= 6.8.6 affected
>= 7.0.0, < 7.9.3 affected
>= 8.0.0, < 8.5.1 affected
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I. Basic Information for CVE-2026-47759

Vulnerability Information
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Vulnerability Title
TinyMCE Cross-Site Scripting (XSS) vulnerability using through data-mce- prefixed src, href, style attributes
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5
Vulnerability Title
Tiny Technologies TinyMCE 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Tiny Technologies TinyMCE是美国Tiny Technologies公司的一款富文本编辑器。 TinyMCE 5.11.1之前版本、7.9.3之前版本和8.5.1之前版本存在跨站脚本漏洞，该漏洞源于未清理的data-mce-*属性可能导致存储型XSS攻击，攻击者可以注入恶意值覆盖安全属性，绕过验证。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
tinymce tinymce < 5.11.1 -

II. Public POCs for CVE-2026-47759

# POC Description Source Link Shenlong Link
AI-Generated POC Premium
Qwen3.6-35B-A3B · 9520 chars
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Vulnerability reproduction recording (real sandbox build + trigger, exclusive)
In-depth vulnerability mechanism
Trigger conditions & impact
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Exploit chain & mitigation
POC zip download
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III. Intelligence Information for CVE-2026-47759

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Vendor Advisories for CVE-2026-47759 (1)

Vendor Pages for CVE-2026-47759 (2)

Same Patch Batch · tinymce · 2026-05-28 · 4 CVEs total

CVE-2026-47760 8.7 HIGH TinyMCE Cross-Site Scripting (XSS) vulnerability using sanitization bypass through nested
CVE-2026-47761 8.7 HIGH TinyMCE Cross-Site Scripting (XSS) vulnerability using media plugin `data-mce-object` inje
CVE-2026-47762 8.7 HIGH TinyMCE Cross-Site Scripting (XSS) vulnerability through `mce:protected` comments

IV. Related Vulnerabilities

Same product: tinymce
Same vendor: tinymce
Same weakness: CWE-79

V. Comments for CVE-2026-47759

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