Feathers has an OAuth Callback Account Takeover issue

NGHIÊM TRỌNG 9.8CVE-2026-29792 · GHSA-wg9x-qfgw-pxhj · Công bố 10/03/2026 · cập nhật 17/06/2026

Tóm tắt nhanh

CVE-2026-29792 là lỗ hổng mức NGHIÊM TRỌNG (CVSS 9.8) ảnh hưởng feathers (feathersjs), @feathersjs/authentication-oauth.
Xác suất bị khai thác trong 30 ngày tới (EPSS): 0.54%, cao hơn 45.5% các lỗ hổng khác.
Cách xử lý: cập nhật lên 5.0.42 hoặc mới hơn.

Gói / sản phẩm	Phiên bản bị ảnh hưởng	Phiên bản đã vá
feathers feathersjs	`≥ 5.0.0, < 5.0.42`	`5.0.42`
@feathersjs/authentication-oauth npm	`≥ 5.0.0, < 5.0.42`	`5.0.42`

Mô tả

An unauthenticated attacker can send a crafted GET request directly to /oauth/:provider/callback with a forged profile in the query string. The OAuth service's authentication payload has a fallback chain that reaches params.query (the raw request query) when Grant's session/state responses are empty. Since the attacker never initiated an OAuth authorize flow, Grant has no session to work with and produces no response, so the fallback fires. The forged profile then drives entity lookup and JWT minting. The attacker gets a valid access token for an existing user without ever contacting the OAuth provider. Critical (CVSS 9.8)

Mô tả của NVD

Feathersjs is a framework for creating web APIs and real-time applications with TypeScript or JavaScript. From 5.0.0 to before 5.0.42, an unauthenticated attacker can send a crafted GET request directly to /oauth/:provider/callback with a forged profile in the query string. The OAuth service's authentication payload has a fallback chain that reaches params.query (the raw request query) when Grant's session/state responses are empty. Since the attacker never initiated an OAuth authorize flow, Grant has no session to work with and produces no response, so the fallback fires. The forged profile then drives entity lookup and JWT minting. The attacker gets a valid access token for an existing user without ever contacting the OAuth provider. This vulnerability is fixed in 5.0.42.