CVE-2020-8493

Name: CVE-2020-8493
Creator: NVD / NIST
Published: 2020-01-30T22:15:10.377+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 4.8/10EPSS 1.49%

Last modified Jun 17, 2026

CVE-2020-8493 is a medium-severity vulnerability rated 4.8/10 on the CVSS scale. 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.. EPSS estimates a 1.49% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

4.8/10

CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N

EPSS Probability

1.49%

70.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-79

Affected Software

Vendor	Product	Versions
Kronos	Web Time And Attendance	>= 3.8, < 4.0

References

http://packetstormsecurity.com/files/156215/Kronos-WebTA-4.0-Privilege-Escalation-Cross-Site-Scripting.htmlExploit, Third Party Advisory
http://www.nolanbkennedy.com/post/stored-xss-in-kronos-web-time-and-attendance-webtaExploit, Third Party Advisory
https://www.kronos.com/products/kronos-webtaProduct, Vendor Advisory
http://packetstormsecurity.com/files/156215/Kronos-WebTA-4.0-Privilege-Escalation-Cross-Site-Scripting.htmlExploit, Third Party Advisory
http://www.nolanbkennedy.com/post/stored-xss-in-kronos-web-time-and-attendance-webtaExploit, Third Party Advisory
https://www.kronos.com/products/kronos-webtaProduct, Vendor Advisory

Timeline

Published: Jan 30, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-8493?

How severe is CVE-2020-8493?

CVE-2020-8493 has a CVSS score of 4.8/10 (MEDIUM severity). The EPSS model estimates a 1.49% probability of exploitation in the next 30 days.

How do I fix CVE-2020-8493?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-8493?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST