CVE-2021-42118: Persistent Cross Site Scripting in Web Applications operating on Business-DNA Solutions GmbH’s TopEase® Platfo

Q: How do I fix CVE-2021-42118?

topease: upgrade to newer than 7.1.27. Exact commands for each OS are on this page.

Q: Is CVE-2021-42118 being exploited?

CVE-2021-42118 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2021-42118 affect?

CVE-2021-42118 affects topease. Severity is high (CVSS 8.1). 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 in

This month

HIGH 8.1UPGRADE

CVE-2021-42118 is a high-severity flaw (CVSS 8.1) affecting topease. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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

Why this priority

High severity

A fixed release or distro patch exists.

Risk facts

CVSS score	8.1 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.7% (top 48%)
CISA exploited list	No
Weakness	CWE-79
Published	2021-11-30
Last modified	2026-06-17

Publisher (CNA): Switzerland Government Common Vulnerability Program · Vendor: businessdnasolutions

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2021-11-30 12:15 UTCPublished CVE record published
2026-06-17 04:09 UTCUpdated Record last modified

businessdnasolutions topease UPGRADE

Affected: <= 7.1.27

Fixed in: newer than 7.1.27

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy topease || rpm -q topease || topease --version

2. UPGRADE to newer than 7.1.27 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade topease

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade topease

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2021-42118?

topease: upgrade to newer than 7.1.27. Exact commands for each OS are on this page.

Is CVE-2021-42118 being exploited?

CVE-2021-42118 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2021-42118 affect?

CVE-2021-42118 affects topease. Severity is high (CVSS 8.1). 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 in

How urgent is CVE-2021-42118?

Priority 41/100. High severity

Related CVEs

CVE-2021-42545 HIGH 8.1 UPGRADE An insufficient session expiration vulnerability exists in Business-DNA Solutions GmbH’s TopEase® Platform Ver
CVE-2021-42544 HIGH 7.5 UPGRADE Missing Rate Limiting in Web Applications operating on Business-DNA Solutions GmbH’s TopEase® Platform Version
CVE-2021-42123 HIGH 7.3 UPGRADE Unrestricted File Upload in Web Applications operating on Business-DNA Solutions GmbH’s TopEase® Platform Vers
CVE-2021-42122 MEDIUM 4.3 UPGRADE Insufficient Input Validation in Web Applications operating on Business-DNA Solutions GmbH’s TopEase® Platform
CVE-2021-42121 MEDIUM 4.3 UPGRADE Insufficient Input Validation in Web Applications operating on Business-DNA Solutions GmbH’s TopEase® Platform

References

← Back to latest CVEs