CVE-2021-27914

High

Published: 01 June 2022

Published

01 June 2022

Modified

21 November 2024

KEV Added

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Patch

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CVSS Score v3.1 7.6 CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:C/C:H/I:H/A:H

EPSS Score 0.0040 61.5th percentile

Risk Priority 15 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2021-27914 is a high-severity Cross-site Scripting (CWE-79) vulnerability in Acquia Mautic. Its CVSS base score is 7.6 (High).

Operationally, ranked in the top 38.5% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.

A cross-site scripting (XSS) vulnerability in the installer component of Mautic before 4.3.0 allows admins to inject executable javascript

No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.

acquia

mautic

≤ 4.3.0

Likely Mitigating Controls AI

Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.

addresses: CWE-79

Penetration testing submits XSS payloads to web applications, detecting cross-site scripting flaws for subsequent remediation.

addresses: CWE-79

Validates web inputs to reject script-related content that could produce XSS.

addresses: CWE-79

Output validation against expected content can reject or sanitize script content in generated web pages, reducing XSS exploitability.