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TI-2026-22155 Aliases CVE-2026-27801GHSA-v6pg-v89r-w8wr

Vaultwarden: 2FA Bypass on Protected Actions due to Faulty Rate Limit Enforcement

Priority MEDIUM 60CWE-307Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
High
Attack requirements
Present
Impact type
Security bypass
Confidentiality · integrity · availability
Low · High · None
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA and GitHub. Impact type from CWE-307.

Summary

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00289 21st percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed vaultwarden (dani-garcia): 1.35.0vaultwarden (crates.io): 1.35.0

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
dani-garciavaultwardenbefore 1.35.01.35.0Patch availableCNA
—vaultwarden (crates.io)before 1.35.01.35.0Patch availableGHSA-v6pg-v89r-w8wr
  • vaultwarden Vendordani-garcia Affected before 1.35.0 Fixed in 1.35.0 Patch available CNA
  • vaultwarden (crates.io) Vendor— Affected before 1.35.0 Fixed in 1.35.0 Patch available GHSA-v6pg-v89r-w8wr

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:dani-garcia:vaultwarden:*:*:*:*:*:*:*:*before 1.35.0Vulnerabledani-garcia
  • cpe:2.3:a:dani-garcia:vaultwarden:*:*:*:*:*:*:*:* Versions before 1.35.0 Vulnerable ·dani-garcia

Remediation

  • Fix · CNA vaultwarden (dani-garcia) Fixed in 1.35.0
  • Fix · GHSA-v6pg-v89r-w8wr vaultwarden (crates.io) Fixed in 1.35.0 Advisory →

Vendor assessments

Red Hat

Red Hat's page for this CVE →

Not affected: 1 product
  • Red Hat

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-27801
  2. 2026-10-03 Alias added: GHSA-v6pg-v89r-w8wr

References

Exploit 1

Advisory 1

Other 1

  • TI-2026-31977 Vaultwarden: Brute-force protection bypass vulnerability CVSS 3.1CRITICAL 9.8
  • TI-2026-31975 Vaultwarden: Cross-Org Group Binding Enables Unauthorized Read And Write Access Into Another Organization CVSS 3.1HIGH 8.7
  • TI-2026-31974 Vaultwarden: Refresh tokens not invalidated on security stamp rotation CVSS 3.1HIGH 8.1
  • TI-2025-18108 vaultwarden allows escalation of privilege via variable confusion in OrgHeaders trait CVSS 3.1HIGH 8.1
  • TI-2025-18107 vaultwarden allows RCE in the admin panel CVSS 3.1HIGH 7.2
  • TI-2026-24388 Vaultwarden WebAuthn credential metadata tampered before signature verification CVSS 4.0MEDIUM 5.3
See all 19 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences