VulnSocial

CVE-2026-42280Patch(auth0 / auth0.js)

LOWCVSS 7.1 · HIGH

Signal is active with 1 mentions in latest observed window

Immediate actions

  • Patch auth0 auth0.js systems immediately

Recommended action window: Monitor and triage in normal cycle

NVD description

Auth0.js is a client-side JavaScript library for Auth0. From 8.11.0 to 9.32.0, under specific preconditions, the Auth0.js SDK may improperly return user profile information using a valid access token when a specifically crafted invalid ID token is provided. This vulnerability is fixed in 10.0.0.

auth0 CVEsBack to dashboard
0.5/ 10 priority

Sources & remediation

Vendor / third-party advisories
Weakness type (CWE)
CWE-863

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

AVAILABLE

Momentum

NONE

Are you affected?

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

  • auth0.js

Threat summary

  • Patch or workaround signal is available
  • 1 mentions across 1 observed day

What's happening

  • Patch or workaround mentioned in 1 signal
  • Technical details provided in 1 signal
  • 1 total mentions across 1 day

Affected systems

Vendors
auth0
Products
auth0.js

Deep dive

Activity timeline1 mentions / 1d
00111Mentions · 2026-05-06: 1Patch / Workaround · 2026-05-06: 1Technical Details · 2026-05-06: 105-06
Signal classification1 categories
Patch
1100.0%
Full discourse1 post
  • Upwind Security MDR@UpwindMDR
    Patch

    🚨 High - Auth0 auth0-js improper permission checking (CVE-2026-42280) Improper validation may return user profile data when a crafted invalid ID token is used with a valid access token, leading to unauthorized information disclosure. 👉 Affects 8.11.0–9.32.0 — update to 10.0.0+

    Post summary

    Auth0 auth0-js CVE-2026-42280 allows unauthorized user profile disclosure via improper validation; affected versions 8.11.0–9.32.0 are fixed in 10.0.0+.

    0001064
    149 followersView on X
CPE platform detail1 entries

1 of 1 entries

PartVendorProductVersionTarget SWTarget HW
Appauth0auth0.js-node.js-

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