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

CVSS 7.7 · High EPSS 0.27% · P19

Affected Version Matrix 1

VendorProductVersion RangeStatus
dani-garciavaultwarden< 1.36.0affected
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I. Basic Information for CVE-2026-47164

Vulnerability Information
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Vulnerability Title
Vaultwarden: SSO Email Auto-Link Can Bind an Existing Local Account to an Attacker-Controlled IdP Identity
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
访问控制不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
dani-garcia vaultwarden 权限许可和访问控制问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
dani-garcia vaultwarden是dani-garcia个人开发者开源的一个密码管理服务。 dani-garcia vaultwarden 1.36.0之前版本存在权限许可和访问控制问题漏洞，该漏洞源于SSO登录流程仅对新用户创建时检查IdP email_verified声明，而未在SSO_SIGNUPS_MATCH_EMAIL=true时将IdP身份链接到现有本地账户时进行检查，导致攻击者控制的IdP身份可以断言受害者电子邮件地址并绑定到该账户进行身份验证。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

VendorProductAffected VersionsCPESubscribe
dani-garciavaultwarden < 1.36.0 -

II. Public POCs for CVE-2026-47164

#POC DescriptionSource LinkShenlong Link
AI-Generated POCPremium
Qwen3.6-35B-A3B · 7336 chars
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III. Intelligence Information for CVE-2026-47164

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Patches & Fixes for CVE-2026-47164 (2)

Vendor Advisories for CVE-2026-47164 (1)

Vendor Pages for CVE-2026-47164 (1)

Same Patch Batch · dani-garcia · 2026-07-15 · 4 CVEs total

CVE-2026-471588.3 HIGHVaultwarden: CSRF in SSO Authorization Flow
CVE-2026-471605.8 MEDIUMVaultwarden: Server-side request forgery (SSRF) via Icon Endpoint Decimal/Hex/Octal IP Byp
CVE-2026-47159Vaultwarden: Authentication Flow Information Disclosure in SSO Discovery Allows Organizati

IV. Related Vulnerabilities

Same product: vaultwarden
Same vendor: dani-garcia
Same weakness: CWE-284

V. Comments for CVE-2026-47164

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