Cyber Resilience

CVE-2021-27917

High

Published: 18 September 2024

Published
18 September 2024
Modified
27 September 2024
KEV Added
Patch
CVSS Score v3.1 7.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
EPSS Score 0.0045 64.1th percentile
Risk Priority 15 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2021-27917 is a high-severity Cross-site Scripting (CWE-79) vulnerability in Acquia Mautic. Its CVSS base score is 7.3 (High).

Operationally, ranked in the top 35.9% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.

EU & UK References

Vulnerability details

Prior to this patch, a stored XSS vulnerability existed in the contact tracking and page hits report.

CWE(s)

Related Threats

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

Affected Assets

acquia
mautic
1.0.0 · 1.0.0 — 4.4.13 · 5.0.0 — 5.1.1

Mitigating Controls

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.

References