Is CVE-2026-42280 actively exploited?

No active exploitation of CVE-2026-42280 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-42280 be exploited remotely?

Yes. CVE-2026-42280 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-42280?

CVE-2026-42280 has a CVSS score of 7.1 (HIGH).

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HIGH

CVE-2026-42280

CWE-863Published: May 27, 2026· Updated: May 29, 2026

7.1

CVSS v3.1

EPSS:0.03%probability of exploitation in 30 daysPercentile:8.6th

Official 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.

NVD Source

Technical Analysis

CVE-2026-42280 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in complete confidentiality breach (data exposure), with a CVSS base score of 7.1.