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CVE-2026-11766— Ultimate Member < 2.12.0 - Subscriber+ Stored XSS via Custom Textarea Profile Fields

Quick assessment

Affected
Unknown Ultimate Member
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Ultimate Member Ultimate Member是Ultimate Member团队的一款用户会员管理插件。 Ultimate Member 2.12.0之前版本存在跨站脚本漏洞，该漏洞源于未正确清理和转义自定义文本区域个人资料字段的值，可能导致认证用户（订阅者级别及以上）存储JavaScript脚本，当任何用户（包括管理员）查看受影响个人资料时执行。

AI Predicted 8.1 Difficulty: Easy EPSS 0.41% · P33

Possible ATT&CK Techniques 1 AI

T1133 · External Remote Services

Affected Version Matrix 1

VendorProduct Version RangeStatus
Unknown Ultimate Member < 2.12.0 affected
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I. Basic Information for CVE-2026-11766

Vulnerability Information
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Vulnerability Title
Ultimate Member < 2.12.0 - Subscriber+ Stored XSS via Custom Textarea Profile Fields
Source: CVE Program / CVE List V5
Vulnerability Description
The Ultimate Member WordPress plugin before 2.12.0 does not properly sanitise and escape the value of custom textarea profile fields before outputting it on user profiles, allowing authenticated users with Subscriber-level access and above to store JavaScript that executes when any user, including an administrator, views the affected profile.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Ultimate Member 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Ultimate Member Ultimate Member是Ultimate Member团队的一款用户会员管理插件。 Ultimate Member 2.12.0之前版本存在跨站脚本漏洞，该漏洞源于未正确清理和转义自定义文本区域个人资料字段的值，可能导致认证用户（订阅者级别及以上）存储JavaScript脚本，当任何用户（包括管理员）查看受影响个人资料时执行。
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
Unknown Ultimate Member 0 ~ 2.12.0 -

II. Public POCs for CVE-2026-11766

# POC Description Source Link Shenlong Link
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III. Intelligence Information for CVE-2026-11766

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Vendor Advisories for CVE-2026-11766 (1)

Same Patch Batch · Unknown · 2026-07-06 · 7 CVEs total

CVE-2026-6382 Multiple elFinder Plugins - Authenticated OS Command Injection
CVE-2026-11855 Simple Membership < 4.7.5 - Unauthenticated Stored XSS via Stripe Webhook API Version
CVE-2026-11962 FileOrganizer < 1.2.0 - Authenticated Arbitrary File Upload via elFinder File Operations
CVE-2026-12083 Admin and Site Enhancements < 8.8.4 - Unauthenticated Administrator-Role Restoration via r
CVE-2026-10830 AllCoach < 1.0.2 - Unauthenticated Account Takeover
CVE-2024-6228 WANotifier < 2.6 - Subscriber+ LFI

IV. Related Vulnerabilities

Same product: Ultimate Member
Same vendor: Unknown

V. Comments for CVE-2026-11766

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