Login Request a demo
Medium severity · published Mar 4, 2026
CVE-2026-27801
Vaultwarden: 2FA Bypass on Protected Actions due to Faulty Rate Limit Enforcement
5.9
CVSS
0.3%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:H/A:N
Attack vector
Network
Complexity
High
Privileges
Low
User interaction
None
Confidentiality
Low
Integrity
High
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 19% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
VA
vaultwarden · dani-garcia
< 1.35.0 · source: vendor, NVD
Affected product
VA
vaultwarden
dani-garcia
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-27801
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-27801
Exploit
https://github.com/dani-garcia/vaultwarden/security/advisories/GHSA-v6pg-v89r-w8wr
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