CVE-2025-50023

WordPress CodePen Embed Block plugin <= 1.2.0 - Cross Site Scripting (XSS) Vulnerability

5.9 Medium

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Chris Coyier CodePen Embed Block codepen-embed-block allows Stored XSS.This issue affects CodePen Embed Block: from n/a through <= 1.2.0.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: High
User interaction: Required

What an attacker can affect

Confidentiality: Low
Integrity: Low
Availability: Low

Exploit likelihood

0.26%Up 0.2 points since Jun 21, 2025

What each source reports

CVE List Score used 5.9

WordPress CodePen Embed Block plugin <= 1.2.0 - Cross Site Scripting (XSS) Vulnerability

Record: CVE-2025-50023
CVSS 3.1: 5.9 MediumCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:L
Weakness: CWE-79
Updated: 2026-11-02

EUVDEUVD-2025-18926 5.9

Record: EUVD-2025-18926
CVSS 3.1: 5.9 MediumCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:L
Updated: 2026-11-02

GitHub AdvisoriesGHSA-mrw7-fvfv-6pm9 5.9

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')...

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Chris Coyier CodePen Embed Block allows Stored XSS. This issue affects CodePen Embed Block: from n/a through 1.1.1.

Record: GHSA-mrw7-fvfv-6pm9
CVSS 3.1: 5.9 MediumCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:L
Weakness: CWE-79
Updated: 2026-11-02

NVD 5.9

Record: CVE-2025-50023
CVSS 3.1: 5.9 MediumCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:L
Weakness: CWE-79
Updated: 2026-11-02

Affected products

chris coyier codepen embed block

History

History
Recorded	Changed	Sources
Nov 2, 2026	first indexed	CVE List, EUVD, GitHub Advisories, NVD

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2025-50023 is a medium vulnerability (CVSS 5.9) in Chris Coyier Codepen Embed Block, published June 20, 2025. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.26%, the 17th percentile. No source names a fixed version.