CVE-2026-43914
7.3 · HIGHOverview
CVE-2026-43914 is a high-severity vulnerability affecting dani-garcia vaultwarden. It was published on May 11, 2026 and has a CVSS 3.1 base score of 7.3 (HIGH).
This vulnerability has a CVSS 3.1 base score of 7.3, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
Technical Description
Vaultwarden is a Bitwarden-compatible server written in Rust. Prior to 1.35.4, there is a security vulnerability in Vaultwarden that allows bypassing the login brute-force protection if email 2fa is enabled. If email 2fa is enabled, the unprotected 2fa-function send_email_login (email.rs, api endpoint /api/two-factor/send-email-login) also acts as an oracle determining whether a username-password combination is correct. An attacker can abuse that endpoint to brute-force passwords without rate-limiting. This works even for users who don't have email 2fa configured. This vulnerability is fixed in 1.35.4.
Remediation
Check the references section for vendor advisories and patches from dani-garcia. Update vaultwarden to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| dani-garcia | vaultwarden | >= 0, < 1.35.4 | Affected |
Frequently Asked Questions
What is CVE-2026-43914?
CVE-2026-43914 is a high-severity vulnerability affecting dani-garcia vaultwarden. It was published on May 11, 2026 and has a CVSS 3.1 base score of 7.3 (HIGH).
How severe is CVE-2026-43914?
This vulnerability has a CVSS 3.1 base score of 7.3, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
How do I fix or remediate CVE-2026-43914?
Check the references section for vendor advisories and patches from dani-garcia. Update vaultwarden to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2026-43914?
CyberStrike's AI-powered security agents can automatically detect CVE-2026-43914 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
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