CVE-2021-42118

Name: CVE-2021-42118
Creator: NVD / NIST
Published: 2021-11-30T12:15:07.81+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.4/10EPSS 0.66%

Last modified Jun 17, 2026

CVE-2021-42118 is a medium-severity vulnerability rated 5.4/10 on the CVSS scale. Persistent Cross Site Scripting in Web Applications operating on Business-DNA Solutions GmbH’s TopEase® Platform Version <= 7.1.27 via the Structure Component allows an authenticated remote attacker with Object Modification privileges to inject arbitrary HTML and JavaScript code in an object attribute, which is then rendered in the Structure Component, to alter the intended functionality and steal cookies, the latter allowing for account takeover.. EPSS estimates a 0.66% chance of exploitation in the next 30 days.

Description

Persistent Cross Site Scripting in Web Applications operating on Business-DNA Solutions GmbH’s TopEase® Platform Version <= 7.1.27 via the Structure Component allows an authenticated remote attacker with Object Modification privileges to inject arbitrary HTML and JavaScript code in an object attribute, which is then rendered in the Structure Component, to alter the intended functionality and steal cookies, the latter allowing for account takeover.

Metrics

CVSS 3.1

5.4/10

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

EPSS Probability

0.66%

46.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Businessdnasolutions	Topease	<= 7.1.27

References

https://confluence.topease.ch/confluence/display/DOC/Release+NotesRelease Notes, Vendor Advisory
https://confluence.topease.ch/confluence/display/DOC/Release+NotesRelease Notes, Vendor Advisory

Timeline

Published: Nov 30, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-42118?

How severe is CVE-2021-42118?

CVE-2021-42118 has a CVSS score of 5.4/10 (MEDIUM severity). The EPSS model estimates a 0.66% probability of exploitation in the next 30 days.

How do I fix CVE-2021-42118?

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-2021-42118?

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

Scan your code now

Source: NVD / NIST