CVE-2026-27801 MEDIUM

CVE-2026-27801: Vaultwarden: 2FA Bypass on Protected Actions due to Faulty Rate Limit Enforcement

Vendor Dani-Garcia
Product vaultwarden
Weakness CWE-307 · Brute force
Published March 4, 2026
Last update March 5, 2026
View on NVD All CVEs

CVSS base score

6.0/10
Attack vector Network
Attack complexity High
Privileges required Low
User interaction None
Confidentiality —
Integrity —

CVSS vector

CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:L/VI:H/VA:N/SC:N/SI:N/SA:N

What the vulnerability does

01Description

Vaultwarden is an unofficial Bitwarden compatible server written in Rust, formerly known as bitwarden_rs. Vaultwarden versions 1.34.3 and prior are susceptible to a 2FA bypass when performing protected actions. An attacker who gains authenticated access to a user’s account can exploit this bypass to perform protected actions such as accessing the user’s API key or deleting the user’s vault and organisations the user is an admin/owner of . This issue has been patched in version 1.35.0.

Key dates

02Disclosure timeline

March 4, 2026 CVE published
March 5, 2026 Record updated