CVE-2025-12025Network attack vector

Stored script execution via unescaped widget settings

Published Nov 25, 2025 · Updated Nov 25, 2025

Stored XSS in YouTube Subscribe 3.0.0 and earlier allows remote authenticated users to inject scripts through widget settings. The widget shortcode renders the saved title and channel ID from admin settings into page output without adequate sanitization or escaping. Administrator-level access is required, and the flaw is reachable only on multisite installations or sites where unfiltered_html is disabled; stored scripts run when a user loads the affected page.

CVSS severity4.4
Medium
EPSS probability0.22%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored XSS in YouTube Subscribe 3.0.0 and earlier allows remote authenticated users to inject scripts through widget settings. The widget shortcode renders the saved title and channel ID from admin settings into page output without adequate sanitization or escaping. Administrator-level access is required, and the flaw is reachable only on multisite installations or sites where unfiltered_html is disabled; stored scripts run when a user loads the affected page.

The record

CVE
CVE-2025-12025
Published
Nov 25, 2025
Updated
Nov 25, 2025
Vendor
Mahabubur Rahman
Product
YouTube Subscribe
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Nov 25, 2025CVE publishedPublication date reported by the CVE source.
  2. Nov 25, 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=* <=3.0.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Mahabubur Rahman · YouTube Subscribeversion=* <=3.0.0

Published CVSS scores

4.4WordfenceCVSS:3.1/AV:N/AC:H/PR:H/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
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1059.007JavaScript/JScript

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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