CVE-2025-68599Network attack vector

Stored browser script execution via undisclosed output handling

Published Dec 24, 2025 · Updated Dec 24, 2025

Stored XSS in Embeds for YouTube 5.4 and earlier allows remote authenticated users to inject scripts that execute in visitors' browsers. Patchstack identifies Contributor-level access but does not disclose the affected field, handler, or missing output-encoding operation. Contributor-level access is required to store the payload, and execution occurs when another user loads the affected output.

CVSS severity6.5
Medium
EPSS probability0.15%
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 Embeds for YouTube 5.4 and earlier allows remote authenticated users to inject scripts that execute in visitors' browsers. Patchstack identifies Contributor-level access but does not disclose the affected field, handler, or missing output-encoding operation. Contributor-level access is required to store the payload, and execution occurs when another user loads the affected output.

The record

CVE
CVE-2025-68599
Published
Dec 24, 2025
Updated
Dec 24, 2025
Vendor
Embeds For YouTube Plugin Support
Product
Embeds for YouTube
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Dec 24, 2025CVE publishedPublication date reported by the CVE source.
  2. Dec 24, 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=n/a <=<= 5.4

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Embeds For YouTube Plugin Support · Embeds for YouTubeversion=n/a <=<= 5.4

Published CVSS scores

6.5PatchstackCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L

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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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')
T1059.007JavaScript/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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