CVE-2026-29792Disclosure(feathersjs / feathers)

LOWCVSS 9.8 · CRITICAL

Exploit discussion active in current signal (2 latest mentions)

Immediate actions

Hunt for exploitation attempts and persistence artifacts
Increase monitoring for publicly documented tradecraft
Track advisory updates for patch or workaround availability

Recommended action window: High priority (within 72h)

NVD description

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.

feathersjs CVEs Back to dashboard

1.5/ 10 priority

Sources & remediation

Vendor / third-party advisories

https://github.com/feathersjs/feathers/security/advisories/GHSA-wg9x-qfgw-pxhj

Weakness type (CWE)

CWE-287

Priority

LOW

Exploitation

NONE

PoC

YES

Patch

NONE

Momentum

NONE

Are you affected?

If you run products in this scope, you should treat this CVE as relevant to your environment.

feathers

Threat summary

Public PoC is present in monitored signal
2 mentions across 1 observed day

What's happening

PoC mentioned or linked in 1 signal
Technical details provided in 2 signals
Disclosure: 2 classified signals
2 total mentions across 1 day

Affected systems

Vendors

feathersjs

Products

feathers

Deep dive

Activity timeline2 mentions / 1d

Signal classification1 categories

Disclosure

2100.0%

Referenced assets2 URLs

By indicator

Full discourse2 posts

CVE@CVEnew212d
Disclosure
CVE-2026-29792 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… https://www.cve.org/CVERecord?id=CVE-2026-29792
Post summary
The tweet highlights a vulnerability in Feathersjs versions 5.0.0‑5.0.41 that allows unauthenticated attackers to exploit the framework, but does not provide any PoC, exploit code, or mitigation details.
00000157
56.7K followersView on X
0day Signal@0dayPublishing212d
Disclosure
🚨 CVE-2026-29792: Feathersjs has an OAuth Callback... OAuth callback bypass lets attackers forge profiles in query params when Grant session is empty, minting valid JWTs for... https://zerodaysignal.com/vulnerability/CVE-2026-29792 #netsec #vulnerability #CVE #sysadmin #zeroday
Post summary
The post announces CVE‑2026‑29792, detailing an OAuth callback bypass that lets attackers forge JWTs and links to a vulnerability page, but provides no evidence of exploitation, patches, or PoC code.
0000049
142 followersView on X

CPE platform detail1 entries

Part:

Vendor:

Product:

Version:

Target SW:

Target HW:

1 of 1 entries

Part	Vendor	Product	Version	Target SW	Target HW
App	feathersjs	feathers	-	node.js	-

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