CVE-2025-66099

WordPress Chat Help plugin <= 3.1.3 - Broken Access Control vulnerability

5.3 Medium

Missing Authorization vulnerability in ThemeAtelier Chat Help chat-help allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects Chat Help: from n/a through <= 3.1.3.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: None

What an attacker can affect

Confidentiality: Low
Integrity: None
Availability: None

Exploit likelihood

0.23%Up 0.2 points since Nov 22, 2025

What each source reports

CVE List Score used 5.3

WordPress Chat Help plugin <= 3.1.3 - Broken Access Control vulnerability

Record: CVE-2025-66099
CVSS 3.1: 5.3 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Weakness: CWE-862
Updated: 2026-11-02

EUVDEUVD-2025-198450 5.3

Record: EUVD-2025-198450
CVSS 3.1: 5.3 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Updated: 2026-11-02

GitHub AdvisoriesGHSA-42r2-h466-hwh9 5.3

Missing Authorization vulnerability in ThemeAtelier Chat Help chat-help allows Exploiting...

Record: GHSA-42r2-h466-hwh9
CVSS 3.1: 5.3 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Weakness: CWE-862
Updated: 2026-11-02

NVD 5.3

Record: CVE-2025-66099
CVSS 3.1: 5.3 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Weakness: CWE-862
Updated: 2026-11-02

Affected products

themeatelier chat help

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-2025-66099 is a medium vulnerability (CVSS 5.3) in Themeatelier Chat Help, published November 21, 2025. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.23%, the 14th percentile. No source names a fixed version.