What’s Vulnerable › Vulnerabilities

CVE-2020-8493

• Severity: medium (CVSS 4.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.5% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2020-01-30 · updated 2026-06-17
• Weakness: CWE-79

Description

A stored XSS vulnerability in Kronos Web Time and Attendance (webTA) affects 3.8.x and later 3.x versions before 4.0 via multiple input fields (Login Message, Banner Message, and Password Instructions) of the com.threeis.webta.H261configMenu servlet via an authenticated administrator.

Affected products

• Kronos Web Time And Attendance: from 3.8 before 4.0 — fixed in 4.0

How to fix

Upgrade to a fixed version: Kronos Web Time And Attendance 4.0. Check the vendor advisory for mitigations.

References

• http://packetstormsecurity.com/files/156215/Kronos-WebTA-4.0-Privilege-Escalation-Cross-Site-Scripting.html
• http://www.nolanbkennedy.com/post/stored-xss-in-kronos-web-time-and-attendance-webta
• https://www.kronos.com/products/kronos-webta
• http://packetstormsecurity.com/files/156215/Kronos-WebTA-4.0-Privilege-Escalation-Cross-Site-Scripting.html
• http://www.nolanbkennedy.com/post/stored-xss-in-kronos-web-time-and-attendance-webta
• https://www.kronos.com/products/kronos-webta

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