CVE-2026-27801
published 2026-03-04CVE-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…
PriorityP339medium5.9CVSS 3.1
AVNACHPRLUINSUCLIHAN
EPSS
0.26%
17.3th percentile
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.
Affected
2 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| dani-garcia | vaultwarden | < 1.35.0 | 1.35.0 |
| dani-garcia | vaultwarden | >= 0 < 1.35.0 | 1.35.0 |
CVSS provenance
nvdv3.15.9MEDIUMCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:H/A:N
nvdv4.06.0MEDIUMCVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:L/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
vendor_redhat6.0MEDIUM
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GHSA
Vaultwarden has 2FA Bypass on Protected Actions due to Faulty Rate Limit Enforcement
ghsa·2026-03-04
CVE-2026-27801 [MEDIUM] CWE-307 Vaultwarden has 2FA Bypass on Protected Actions due to Faulty Rate Limit Enforcement
Vaultwarden has 2FA Bypass on Protected Actions due to Faulty Rate Limit Enforcement
### Summary
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
### Details
Within Vaultwarden, the `PasswordOrOtpData` struct is used to gate certain protected actions such as account deletion behind a 2FA validation. This validation requires the user to either re-enter their master password, or to enter a one-time passcode sent to their email address.
By default, the one-time passcode is comprised of six digits, and
OSV
Vaultwarden has 2FA Bypass on Protected Actions due to Faulty Rate Limit Enforcement
osv·2026-03-04
CVE-2026-27801 [MEDIUM] Vaultwarden has 2FA Bypass on Protected Actions due to Faulty Rate Limit Enforcement
Vaultwarden has 2FA Bypass on Protected Actions due to Faulty Rate Limit Enforcement
### Summary
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
### Details
Within Vaultwarden, the `PasswordOrOtpData` struct is used to gate certain protected actions such as account deletion behind a 2FA validation. This validation requires the user to either re-enter their master password, or to enter a one-time passcode sent to their email address.
By default, the one-time passcode is comprised of six digits, and
Red Hat
vaultwarden: Vaultwarden: Two-factor authentication bypass allows unauthorized access and data deletion.
vendor_redhat·2026-03-04·CVSS 6.0
CVE-2026-27801 [MEDIUM] CWE-307 vaultwarden: Vaultwarden: Two-factor authentication bypass allows unauthorized access and data deletion.
vaultwarden: Vaultwarden: Two-factor authentication bypass allows unauthorized access and data deletion.
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.
A flaw was found in Vaultwarden. An authenticated attacker could bypass two-factor authentication (2FA) to perform sensitive actions. This bypass allows the attacker to access a user's API key or delete
No detection rules found.
No public exploits indexed.
Bugzilla
CVE-2026-27801 vaultwarden-web: Vaultwarden: Two-factor authentication bypass allows unauthorized access and data deletion. [fedora-43]
bugzilla·2026-03-05·CVSS 6.0
CVE-2026-27801 [MEDIUM] CVE-2026-27801 vaultwarden-web: Vaultwarden: Two-factor authentication bypass allows unauthorized access and data deletion. [fedora-43]
CVE-2026-27801 vaultwarden-web: Vaultwarden: Two-factor authentication bypass allows unauthorized access and data deletion. [fedora-43]
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.
Discussion:
FEDORA-2026-064873552d (vaultwarden-web-2026.4.1-1.fc43) has been submitted as an update to Fedora 43.
https://bodhi.fedoraproject.org/updates/FEDORA-2026-064873552d
Bugzilla
CVE-2026-27801 vaultwarden-web: Vaultwarden: Two-factor authentication bypass allows unauthorized access and data deletion. [fedora-42]
bugzilla·2026-03-05·CVSS 6.0
CVE-2026-27801 [MEDIUM] CVE-2026-27801 vaultwarden-web: Vaultwarden: Two-factor authentication bypass allows unauthorized access and data deletion. [fedora-42]
CVE-2026-27801 vaultwarden-web: Vaultwarden: Two-factor authentication bypass allows unauthorized access and data deletion. [fedora-42]
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.
Discussion:
This message is a reminder that Fedora Linux 42 is nearing its end of life.
Fedora will stop maintaining and issuing updates for Fedora Linux 42 on 2026-05-13.
It is Fedora's policy to close all bug reports from releases that are no longer
maintained. At that time this bug will be closed as EOL if it remains open with a
'version' of '42'.
Package Maintainer: If you wish for this bug to remain open because you
plan to fix
Bugzilla
CVE-2026-27801 vaultwarden: Vaultwarden: Two-factor authentication bypass allows unauthorized access and data deletion. [fedora-42]
bugzilla·2026-03-05·CVSS 6.0
CVE-2026-27801 [MEDIUM] CVE-2026-27801 vaultwarden: Vaultwarden: Two-factor authentication bypass allows unauthorized access and data deletion. [fedora-42]
CVE-2026-27801 vaultwarden: Vaultwarden: Two-factor authentication bypass allows unauthorized access and data deletion. [fedora-42]
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.
Discussion:
This message is a reminder that Fedora Linux 42 is nearing its end of life.
Fedora will stop maintaining and issuing updates for Fedora Linux 42 on 2026-05-13.
It is Fedora's policy to close all bug reports from releases that are no longer
maintained. At that time this bug will be closed as EOL if it remains open with a
'version' of '42'.
Package Maintainer: If you wish for this bug to remain open because you
plan to fix it
Bugzilla
CVE-2026-27801 vaultwarden-web: Vaultwarden: Two-factor authentication bypass allows unauthorized access and data deletion. [epel-10]
bugzilla·2026-03-05·CVSS 6.0
CVE-2026-27801 [MEDIUM] CVE-2026-27801 vaultwarden-web: Vaultwarden: Two-factor authentication bypass allows unauthorized access and data deletion. [epel-10]
CVE-2026-27801 vaultwarden-web: Vaultwarden: Two-factor authentication bypass allows unauthorized access and data deletion. [epel-10]
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.
Discussion:
FEDORA-EPEL-2026-c4971fa237 (vaultwarden-web-2026.4.1-1.el10_2) has been submitted as an update to Fedora EPEL 10.2.
https://bodhi.fedoraproject.org/updates/FEDORA-EPEL-2026-c4971fa237
---
FEDORA-EPEL-2026-f88f773927 (vaultwarden-web-2026.4.1-1.el10_3) has been submitted as an update to Fedora EPEL 10.3.
https://bodhi.fedoraproject.org/updates/FEDORA-EPEL-2026-f88f773927
---
FEDORA-EPEL-2026-c4971fa237 has been pushed t
Wiz
CVE-2026-27801 Impact, Exploitability, and Mitigation Steps | Wiz
blogs_wiz·CVSS 6.0
CVE-2026-27801 [MEDIUM] CVE-2026-27801 Impact, Exploitability, and Mitigation Steps | Wiz
## CVE-2026-27801 :
Rust vulnerability analysis and mitigation
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.
Source : NVD
## 6
Score
Published March 4, 2026
Severity MEDIUM
CNA Score 6.0
Affected Technologies
Rust
NixOS
Has Public Exploit Yes
Has CISA KEV Exploit No
CISA KEV Release Date N/A
CISA KEV Due Date N/A
Exploitation Probabilit
2026-03-04
Published