CVE-2026-29792: Feathersjs is a framework for creating web APIs and real-time applications with TypeScript or JavaScript

Q: How do I fix CVE-2026-29792?

feathers: upgrade to 5.0.42. Exact commands for each OS are on this page.

Q: Is CVE-2026-29792 being exploited?

CVE-2026-29792 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-29792 affect?

CVE-2026-29792 affects feathers. Severity is critical (CVSS 9.8). 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 f

Q: How urgent is CVE-2026-29792?

Priority 51/100. Critical severity; Remotely exploitable, no login, no user action

This month

CRITICAL 9.8REMOTEUPGRADE

CVE-2026-29792 is a critical-severity flaw (CVSS 9.8) affecting feathers. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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 att

Why this priority

Critical severity
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.5% (top 55%)
CISA exploited list	No
Weakness	CWE-287
Published	2026-03-10
Last modified	2026-06-17

Publisher (CNA): GitHub, Inc. · Vendor: feathersjs

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-03-10 20:16 UTCPublished CVE record published
2026-06-17 10:29 UTCUpdated Record last modified

feathersjs feathers UPGRADE

Affected: >= 5.0.0 and < 5.0.42

Fixed in: 5.0.42

Safe to downgrade to: a release before 5.0.0

1. Check installed version

npm ls feathers

2. UPGRADE to 5.0.42

npm install feathers@">=5.0.42"

3. If no update is available yet, DOWNGRADE to a release before 5.0.0

npm view feathers versions npm install feathers@"<5.0.0"

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-29792?

feathers: upgrade to 5.0.42. Exact commands for each OS are on this page.

Is CVE-2026-29792 being exploited?

CVE-2026-29792 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-29792 affect?

CVE-2026-29792 affects feathers. Severity is critical (CVSS 9.8). 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 f

How urgent is CVE-2026-29792?

Priority 51/100. Critical severity; Remotely exploitable, no login, no user action

Related CVEs

CVE-2026-29793 CRITICAL 9.8 UPGRADE Feathersjs is a framework for creating web APIs and real-time applications with TypeScript or JavaScript
CVE-2026-27193 MEDIUM 5.3 UPGRADE Feathersjs is a framework for creating web APIs and real-time applications with TypeScript or JavaScript
CVE-2026-27192 HIGH 8.1 UPGRADE Feathersjs is a framework for creating web APIs and real-time applications with TypeScript or JavaScript
CVE-2026-27191 MEDIUM 6.1 UPGRADE Feathersjs is a framework for creating web APIs and real-time applications with TypeScript or JavaScript

References

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