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TI-2026-34754 Aliases CVE-2026-47164

Vaultwarden: SSO Email Auto-Link Can Bind an Existing Local Account to an Attacker-Controlled IdP Identity

Priority LOW 36CWE-284Published · Updated

Key facts

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

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-284.

Summary

Vaultwarden is a Bitwarden-compatible server written in Rust. Prior to 1.36.0, Vaultwarden's SSO login flow checked the IdP email_verified claim only for new-user creation and not when SSO_SIGNUPS_MATCH_EMAIL=true linked an IdP identity to an existing local account, allowing an attacker-controlled IdP identity asserting a victim email address to bind to and authenticate as that account. This issue is fixed in version 1.36.0.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00448 39th percentileScored 2026-11-07
Fix Fixed vaultwarden (dani-garcia): 1.36.0

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

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 1.36.01.36.0Patch availableCNA
  • vaultwarden Vendordani-garcia Affected before 1.36.0 Fixed in 1.36.0 Patch available CNA

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPEVersionsRoleVendor
cpe:2.3:a:dani-garcia:vaultwarden:*:*:*:*:*:*:*:*——dani-garcia
  • cpe:2.3:a:dani-garcia:vaultwarden:*:*:*:*:*:*:*:* Versions — — ·dani-garcia

Remediation

  • Fix · CNA vaultwarden (dani-garcia) Fixed in 1.36.0

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-2026-47164

References

Other 4

  • 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-2026-34749 Improper authentication in dani-garcia vaultwarden CVSS 4.0MEDIUM 6.9
  • 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
See all 25 →

Sources

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