CVE-2020-8493Public exploitNetwork attack vector

Stored script execution via unneutralized configuration fields

Published Jan 30, 2020 · Updated Aug 4, 2024

Stored XSS in Kronos Web Time and Attendance 3.8.x and later 3.x versions before 4.0 allows remote authenticated users to run script. The com.threeis.webta.H261configMenu servlet stores Login Message, Banner Message, and Password Instructions input without neutralizing it before web-page output. Administrator privileges are required to plant a payload, and another user's browser must render an affected field; the script then executes in the webTA origin.

CVSS severity6.9
Medium
EPSS probability1.49%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored XSS in Kronos Web Time and Attendance 3.8.x and later 3.x versions before 4.0 allows remote authenticated users to run script. The com.threeis.webta.H261configMenu servlet stores Login Message, Banner Message, and Password Instructions input without neutralizing it before web-page output. Administrator privileges are required to plant a payload, and another user's browser must render an affected field; the script then executes in the webTA origin.

The record

CVE
CVE-2020-8493
Published
Jan 30, 2020
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-79, T1190
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Jan 30, 2020CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

3.5NIST NVDAV:N/AC:M/Au:S/C:N/I:P/A:N
4.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
6.9MITRECVSS:3.0/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:H/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesadmin
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1190Exploit Public-Facing Application

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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