What is CVE-2026-27801?

CVE-2026-27801 is a medium-severity vulnerability in Dani-garcia Vaultwarden, classified under Improper Restriction of Excessive Authentication Attempts. CVSS score: 5.9/10. Published 2026-03-04.

How severe is CVE-2026-27801?

Medium severity. CVSS v3 base score is 5.9 out of 10.

Vulnerability in Dani-garcia Vaultwarden

CVE-2026-27801

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 authen…

EPSS: 0.003 (17.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.9 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:H/A:N.

Affected products

Dani-garcia Vaultwarden — versions < 1.35.0

Weakness classification (CWE)

CWE-307 — Improper Restriction of Excessive Authentication Attempts

References

security-advisories@github.com (x_refsource_CONFIRM, Exploit, Mitigation, Vendor Advisory)

Frequently asked questions

What is CVE-2026-27801?: CVE-2026-27801 is a medium-severity vulnerability in Dani-garcia Vaultwarden, classified under Improper Restriction of Excessive Authentication Attempts. CVSS score: 5.9/10. Published 2026-03-04.
How severe is CVE-2026-27801?: Medium severity. CVSS v3 base score is 5.9 out of 10.