What is CVE-2021-42118?

CVE-2021-42118 is a high-severity vulnerability in Businessdnasolutions Topease, classified under Cross-site Scripting. CVSS score: 8.1/10. Published 2021-11-30.

How severe is CVE-2021-42118?

High severity. CVSS v3 base score is 8.1 out of 10.

Is CVE-2021-42118 known to be exploited?

2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

XSS in Businessdnasolutions Topease

CVE-2021-42118

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.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.007 (49.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N.

Affected products

Businessdnasolutions Topease
Business-dna Solutions Gmbh Topease — versions unspecified

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

Public proof-of-concept exploits

References

vulnerability@ncsc.ch (x_refsource_CONFIRM, Release Notes, Vendor Advisory)

Frequently asked questions

What is CVE-2021-42118?: CVE-2021-42118 is a high-severity vulnerability in Businessdnasolutions Topease, classified under Cross-site Scripting. CVSS score: 8.1/10. Published 2021-11-30.
How severe is CVE-2021-42118?: High severity. CVSS v3 base score is 8.1 out of 10.
Is CVE-2021-42118 known to be exploited?: 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.