CVE-2026-47164
Vaultwarden: SSO Email Auto-Link Can Bind an Existing Local Account to an Attacker-Controlled IdP Identity
CVSS Score
7.7
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-284 |
| Vendor | dani-garcia |
| Product | vaultwarden |
| Published | Jul 15, 2026 |
| Last Updated | Jul 15, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
Low
Affected Versions
dani-garcia / vaultwarden
< 1.36.0
References
github.com: https://github.com/dani-garcia/vaultwarden/security/advisories/GHSA-6x5c-84vm-5j56 github.com: https://github.com/dani-garcia/vaultwarden/pull/7163 github.com: https://github.com/dani-garcia/vaultwarden/commit/d297e274a35dccd0f5d935e9d5934e0f7e9c0a87 github.com: https://github.com/dani-garcia/vaultwarden/releases/tag/1.36.0