CVE catalog
CVE-2026-43914
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 e
- Severity
- High · CVSS 7.3
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 0.29% · Oct 25, 2026
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.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Cpe | vaultwarden | Not reported | 1.35.4 | fixed |
| Cpe | vaultwarden | Not reported | 1.35.4 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Cpe | vaultwarden | cpe | Not reported | 1.35.4 | Not reported | Not reported | Not reported |
| Cpe | vaultwarden | cpe | Not reported | 1.35.4 | Not reported | NVD-CVE-2026-43914 | Not reported |
OpenFactory catalog packages
No matching packages in this catalog.
Observed:
References
- [https://github.com/dani-garcia/vaultwarden/pull/6867]
- [https://github.com/dani-garcia/vaultwarden/releases/tag/1.35.4]
- [https://github.com/dani-garcia/vaultwarden/security/advisories/GHSA-c5rv-q295-7w4g]
- [https://nvd.nist.gov/vuln/detail/CVE-2026-43914]
- [https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-43914.json]
- [https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-1285.json]
[CERT-Bund public advisories] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [Red Hat security advisories and VEX]