CVE-2024-55224

CriticalPublic PoC

Published: 09 January 2025

Published

09 January 2025

Modified

20 June 2025

KEV Added

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Patch

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CVSS Score 9.6 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H

EPSS Score 0.0038 59.7th percentile

Risk Priority 19 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2024-55224 is a critical-severity Cross-site Scripting (CWE-79) vulnerability in Dani-Garcia Vaultwarden. Its CVSS base score is 9.6 (Critical).

Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked in the top 40.3% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.

The strongest mitigations our analysis identified are NIST 800-53 SI-10 (Information Input Validation) and SI-15 (Information Output Filtering).

Threat & Defense at a Glance

What attackers do: exploitation maps to Exploit Public-Facing Application (T1190). What defenders deploy: see the NIST 800-53 controls recommended below.

Threat & Defense Details

Mitigating Controls (NIST 800-53 r5)AI

SI-2 Flaw Remediation good match

prevent

SI-2 requires timely flaw remediation, directly mitigating this CVE by mandating upgrades to Vaultwarden v1.32.5 or later where the HTML injection vulnerability is fixed.

SI-15 Information Output Filtering good match

prevent

SI-15 enforces output filtering, preventing HTML injection by sanitizing username payloads before inclusion in email messages.

SI-10 Information Input Validation good match

prevent

SI-10 validates input to the username field, blocking crafted HTML payloads that enable arbitrary code execution.

MITRE ATT&CK Enterprise TechniquesAI

T1190 Exploit Public-Facing Application Initial Access

Adversaries may attempt to exploit a weakness in an Internet-facing host or system to initially access a network.

attack.mitre.org →

Why these techniques?

HTML injection (XSS) in public-facing Vaultwarden web app directly enables remote exploitation of a server-side vulnerability (CWE-79) to achieve arbitrary code execution in victim context.

Confidence: HIGH · MITRE ATT&CK Enterprise v18.1

NVD Description

An HTML injection vulnerability in Vaultwarden prior to v1.32.5 allows attackers to execute arbitrary code via injecting a crafted payload into the username field of an e-mail message.

Deeper analysisAI

CVE-2024-55224 is an HTML injection vulnerability (CWE-79) in Vaultwarden versions prior to 1.32.5. The flaw enables attackers to execute arbitrary code by injecting a crafted payload into the username field of an email message.

Unauthenticated attackers can exploit this vulnerability remotely over the network with low attack complexity, though it requires user interaction. Successful exploitation achieves high-impact effects on confidentiality, integrity, and availability with a changed scope, earning a CVSS v3.1 base score of 9.6 (AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H).

Vaultwarden release notes for versions 1.32.4 and 1.32.5 address the issue, recommending an upgrade to v1.32.5 or later for mitigation. Further details appear in a vulnerability disclosure published on insinuator.net.