CVE-2021-27911
moderate-risk
Published 2021-08-30
Mautic versions before 3.3.4/4.0.0 are vulnerable to an inline JS XSS attack through the contact's first or last name and triggered when viewing a contact's details page then clicking on the action drop down and hovering over the Campaigns button. Contact first and last name can be populated from different sources such as UI, API, 3rd party syncing, forms, etc.
Do I need to act?
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0.35% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
8
CVSS 8.3/10
High
NETWORK
/ HIGH complexity
Affected Vendors
36
/ 100
moderate-risk
Severity
25/34 · High
Exploitability
1/34 · Minimal
Exposure
10/34 · Low