Vulnerability · Published Jul 15, 2026 · Assigned by GitHub_M

CVE-2026-47164Vaultwarden: SSO Email Auto-Link Can Bind an Existing Local Account to an Attacker-Controlled IdP Identity

High 7.7

In plain English

A high-severity improper access control in vaultwarden from dani-garcia. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 39% of all known vulnerabilities).

Severity (CVSS 3.1)7.7High

Exploit odds (30 days)0.4%top 60.9% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

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.

Affected products (as reported)

Vendor	Product	Versions
dani-garcia	vaultwarden	< 1.36.0

Weakness: CWE-284 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L

References

https://github.com/dani-garcia/vaultwarden/security/advisories/GHSA-6x5c-84vm-5j56 x_refsource_CONFIRM
https://github.com/dani-garcia/vaultwarden/pull/7163 x_refsource_MISC
https://github.com/dani-garcia/vaultwarden/commit/d297e274a35dccd0f5d935e9d5934e0f7e9c0a87 x_refsource_MISC
https://github.com/dani-garcia/vaultwarden/releases/tag/1.36.0 x_refsource_MISC