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CVE-2026-41574— Nhost Vulnerable to Account Takeover via OAuth Email Verification Bypass

Quick assessment

Affected
nhost nhost
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Nhost是Nhost开源的一个后端即服务平台。 Nhost 0.49.1之前版本存在授权问题漏洞，该漏洞源于OAuth身份验证时自动匹配邮箱，但部分提供商适配器未正确验证邮箱，可能导致账户接管。

AI Predicted 9.1 Difficulty: Easy EPSS 0.91% · P59

Possible ATT&CK Techniques 1 AI

T1199 · Trusted Relationship

Affected Version Matrix 1

VendorProduct Version RangeStatus
nhost nhost < 0.49.1 affected
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I. Basic Information for CVE-2026-41574

Vulnerability Information
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Vulnerability Title
Nhost Vulnerable to Account Takeover via OAuth Email Verification Bypass
Source: CVE Program / CVE List V5
Vulnerability Description
Nhost is an open source Firebase alternative with GraphQL. Prior to version 0.49.1, Nhost automatically links an incoming OAuth identity to an existing Nhost account when the email addresses match. This is only safe when the email has been verified by the OAuth provider. Nhost's controller trusts a profile.EmailVerified boolean that is set by each provider adapter. The vulnerability is that several provider adapters do not correctly populate this field they either silently drop a verified field the provider API actually returns (Discord), or they fall back to accepting unconfirmed emails and marking them as verified (Bitbucket). Two Microsoft providers (AzureAD, EntraID) derive the email from non-ownership-proving fields like the user principal name, then mark it verified. The result is that an attacker can present an email they don't own to Nhost, have the OAuth identity merged into the victim's account, and receive a full authenticated session. This issue has been patched in version 0.49.1.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
认证机制不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Nhost 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Nhost是Nhost开源的一个后端即服务平台。 Nhost 0.49.1之前版本存在授权问题漏洞，该漏洞源于OAuth身份验证时自动匹配邮箱，但部分提供商适配器未正确验证邮箱，可能导致账户接管。
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

Vendor Product Affected Versions CPE Subscribe
nhost nhost < 0.49.1 -

II. Public POCs for CVE-2026-41574

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III. Intelligence Information for CVE-2026-41574

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Patches & Fixes for CVE-2026-41574 (1)

Vendor Advisories for CVE-2026-41574 (1)

Vendor Pages for CVE-2026-41574 (1)

IV. Related Vulnerabilities

Same product: nhost
Same vendor: nhost
Same weakness: CWE-287

V. Comments for CVE-2026-41574

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