CVE-2025-13217Network attack vectorHinoki check available

Stored XSS via unescaped YouTube video URL

Published Dec 17, 2025 · Updated Dec 17, 2025

Stored XSS in Ultimate Member 2.11.0 and earlier allows remote authenticated users to inject scripts through a YouTube Video field. The um_profile_field_filter_hook__youtube_video() function stores user-supplied iframe URLs without sufficient sanitization and later emits them without adequate escaping. Subscriber-level access is sufficient, and the script runs in a visitor's browser when the affected profile page is opened.

CVSS severity6.4
Medium
EPSS probability0.29%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Stored XSS in Ultimate Member 2.11.0 and earlier allows remote authenticated users to inject scripts through a YouTube Video field. The um_profile_field_filter_hook__youtube_video() function stores user-supplied iframe URLs without sufficient sanitization and later emits them without adequate escaping. Subscriber-level access is sufficient, and the script runs in a visitor's browser when the affected profile page is opened.

The record

CVE
CVE-2025-13217
Published
Dec 17, 2025
Updated
Dec 17, 2025
Vendor
Ultimate Member Group Ltd
Product
Ultimate Member
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Dec 17, 2025CVE publishedPublication date reported by the CVE source.
  2. Dec 17, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=* <=2.11.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Ultimate Member Group Ltd · Ultimate Memberversion=* <=2.11.0

Published CVSS scores

6.4WordfenceCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1059.007Command and Scripting Interpreter: JavaScript

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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