Cyber Resilience

CVE-2024-55224

CriticalPublic PoC

Published: 09 January 2025

Published
09 January 2025
Modified
20 June 2025
KEV Added
—
Patch
—
CVSS Score v3.1 9.6 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
EPSS Score 0.0052 67.3th percentile
Risk Priority 20 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 32.7% 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).

Deeper analysis

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.

EU & UK References

Vulnerability details

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.

CWE(s)
CWE-79

Related Threats

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

CVEs Like This One

CVE-2024-55225Same product: Dani-Garcia Vaultwarden
CVE-2025-24364Same product: Dani-Garcia Vaultwarden
CVE-2026-27803Same product: Dani-Garcia Vaultwarden
CVE-2026-43912Same product: Dani-Garcia Vaultwarden
CVE-2026-43914Same product: Dani-Garcia Vaultwarden
CVE-2026-27802Same product: Dani-Garcia Vaultwarden
CVE-2025-24365Same product: Dani-Garcia Vaultwarden
CVE-2026-43913Same product: Dani-Garcia Vaultwarden
CVE-2021-47873Shared CWE-79
CVE-2026-7052Shared CWE-79

Affected Assets

dani-garcia
vaultwarden
≤ 1.32.5

Mitigating Controls

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.

References