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

March 4, 2026 (updated March 5, 2026)

Vaultwarden v1.34.3 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.

Note that

References

github.com/advisories/GHSA-v6pg-v89r-w8wr
github.com/dani-garcia/vaultwarden
github.com/dani-garcia/vaultwarden/security/advisories/GHSA-v6pg-v89r-w8wr
nvd.nist.gov/vuln/detail/CVE-2026-27801

Code Behaviors & Features

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