CVE-2026-83546: CWE-79 Cross-Site Scripting (XSS) in CoolClock
The CoolClock WordPress plugin before 4.3.8 does not properly escape a skin setting before outputting it within an HTML attribute, allowing users with contributor-level access and above to inject arbitrary web scripts that execute when the content is viewed.
AI Analysis
Technical Summary
CVE-2026-83546 is a CWE-79 Cross-Site Scripting vulnerability in the CoolClock WordPress plugin affecting versions from 0 up to but not including 4.3.8. The vulnerability occurs due to improper escaping of a skin setting before it is output within an HTML attribute. This allows authenticated users with contributor-level permissions or higher to inject malicious scripts that execute in the context of users viewing the affected content.
Potential Impact
An attacker with contributor-level access or higher can inject arbitrary JavaScript code that executes in the browsers of users viewing the affected content. This can lead to session hijacking, defacement, or other malicious actions within the context of the affected site. However, exploitation requires authenticated access at contributor level or above.
Mitigation Recommendations
Upgrade the CoolClock plugin to version 4.3.8 or later where this vulnerability is fixed. No other mitigation details are provided. Patch status is not explicitly confirmed in the input, but the version 4.3.8 is indicated as the fixed version.
CVE-2026-83546: CWE-79 Cross-Site Scripting (XSS) in CoolClock
Description
The CoolClock WordPress plugin before 4.3.8 does not properly escape a skin setting before outputting it within an HTML attribute, allowing users with contributor-level access and above to inject arbitrary web scripts that execute when the content is viewed.
CVSS v3.1
Score 6.8medium
Affected software
CoolClock
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-83546 is a CWE-79 Cross-Site Scripting vulnerability in the CoolClock WordPress plugin affecting versions from 0 up to but not including 4.3.8. The vulnerability occurs due to improper escaping of a skin setting before it is output within an HTML attribute. This allows authenticated users with contributor-level permissions or higher to inject malicious scripts that execute in the context of users viewing the affected content.
Potential Impact
An attacker with contributor-level access or higher can inject arbitrary JavaScript code that executes in the browsers of users viewing the affected content. This can lead to session hijacking, defacement, or other malicious actions within the context of the affected site. However, exploitation requires authenticated access at contributor level or above.
Mitigation Recommendations
Upgrade the CoolClock plugin to version 4.3.8 or later where this vulnerability is fixed. No other mitigation details are provided. Patch status is not explicitly confirmed in the input, but the version 4.3.8 is indicated as the fixed version.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- WPScan
- Date Reserved
- 2026-08-31T18:05:52.974Z
- State
- PUBLISHED
Threat ID: 6aa3a07b91cc7f3848c78c4b
Added to database: 09/11/2026, 06:32:27 UTC
Last enriched: 09/11/2026, 06:48:27 UTC
Last updated: 09/11/2026, 22:06:35 UTC
Views: 14
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