CVE-2026-43914

Vaultwarden is a Bitwarden-compatible server written in Rust. Pri ...

Published 11 May 2026Modified 26 Oct 2026CWE 307

In the Trivy database since at least 24 Oct 2026, 07:11 UTCWhen it arrived before that build is not recorded.

Severity by source

NVD9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Trivy's own label is CRITICAL. Rated critical by NVD.

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.

Affected packages and fixed versions

Source	Package	Fixed in
rapidfort alpine 3.20	vaultwarden	1.35.4-r0
rapidfort alpine 3.21	vaultwarden	1.35.4-r0
rapidfort alpine 3.22	vaultwarden	1.35.4-r0
rapidfort alpine 3.23	vaultwarden	1.35.4-r0
rapidfort fedora 43	vaultwarden	1.36.0-1.fc43
rapidfort Oracle Linux 10	vaultwarden	1.36.0-1.el10_2
rapidfort Oracle Linux 9	vaultwarden	1.36.0-1.el9

References

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RefusesWith a policy that blocks critical findings, a pod with this image is refused at admission, a rollback to it included. Pods already running are not evicted.
RecordsEach decision is recorded with the policy that ran and its hash, then sealed under a signed checkpoint.

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Vulnerability data compiled from the Trivy vulnerability database (trivy-db, Aqua Security, Apache License 2.0), which aggregates third-party advisories. CVE records are published by The MITRE Corporation under the CVE Terms of Use; CVE is a trademark of MITRE. This product uses data from the NVD API but is not endorsed or certified by the NVD. Severity, titles and advisory data from the GitHub Advisory Database (CC BY 4.0), Red Hat security data (CC BY 4.0) and the other sources linked on each entry. Entries may be summarised or re-formatted; the linked original is the authoritative record.