How broadly exploitable is this vulnerability?

The issue is broadly exploitable wherever the affected FeathersJS OAuth callback endpoint is exposed to the internet and configured in the vulnerable manner. Any remote attacker who can reach `/oauth/:provider/callback` can attempt to forge a query string profile and obtain a valid JWT, without needing a valid user session or contact with the real OAuth provider.

Does an attacker need an existing account or credentials?

The attacker does not need credentials, but successful exploitation typically requires them to forge a profile that matches an existing user in the application (for example, by guessing an email or provider-specific user ID). Once a matching entity is found, the system may issue a JWT for that account.

What is the safest general fix pattern for developers?

The most robust fix is to ensure that authentication is never completed unless there is a verified OAuth provider response that is strongly bound to a prior authorization request (via state/session). Any absence of provider data, invalid state, or missing session should immediately terminate the flow with an error. Additionally, all fallbacks that read user identity from `params.query` or other untrusted inputs during authentication should be removed or tightly constrained.

Severity:

CRITICAL RISK

(9.8)

Authentication Bypass via Forged OAuth Callback Profile (CWE-287) in FeathersJS OAuth Service

CVE-2026-29792

Published:

Mar 10, 2026

Status:

Analyzed

Summary

Affected Context

Exploit Preconditions

Why This Happens

Potential Impact

General Mitigation Guidance

How Teams Detect Issues Like This

Frequently Asked Questions

Source

NDV

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May 6, 2026

Vulnerability Type

Category:

Authentication Bypass

CWE:

CWE-287

Impact:

Credential-less Account Takeover / Authentication Bypass

Severity:

CRITICAL RISK

(9.8)

CVSS Version:

3.1

Vulnerability Type

Category:

Authentication Bypass

CWE:

CWE-287

Impact:

Credential-less Account Takeover / Authentication Bypass

Severity:

CRITICAL RISK

(9.8)

CVSS Version:

3.1

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Authentication Bypass via Forged OAuth Callback Profile (CWE-287) in FeathersJS OAuth Service

Summary

Affected Context

Exploit Preconditions

Why This Happens

Potential Impact

General Mitigation Guidance

How Teams Detect Issues Like This

Frequently Asked Questions

Source

Recent Vulnerabilities

HIGH RISK

HIGH

(8.6)

Server-Side Request Forgery (CWE-918) in OpenClaw Zalo Plugin sendPhoto

HIGH RISK

HIGH

(8.8)

Authorization Bypass (CWE-863) in OpenClaw Matrix Room Control Commands

Vulnerability Type

Vulnerability Type

Vulnerability Type

Catch This CVE While Code Is Being Written

Ship clean & secure code faster

Ship clean & secure code faster

Ship clean & secure code faster

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