Is CVE-2026-42565 actively exploited?

No active exploitation of CVE-2026-42565 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-42565 be exploited remotely?

Yes. CVE-2026-42565 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-42565?

CVE-2026-42565 has a CVSS score of 4.3 (MEDIUM).

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MEDIUM

CVE-2026-42565

CWE-601Published: May 11, 2026· Updated: May 13, 2026

4.3

CVSS v3.1

EPSS:0.03%probability of exploitation in 30 daysPercentile:7.6th

Official Description

@workos/authkit-session is a toolkit for building WorkOS AuthKit framework integrations. Prior to 0.5.1, an open redirect vulnerability exists in AuthService.handleCallback due to insufficient validation of the returnPathname value derived from the OAuth state parameter. The state parameter is round-tripped through the identity provider (IdP) and can be influenced by an attacker. The handleCallback function decodes and returns returnPathname without enforcing restrictions on origin or scheme. As a result, attacker-controlled values may be returned to the application. If this value is used directly in a redirect, it may cause the user to be redirected to an external, attacker-controlled site. This vulnerability is fixed in 0.5.1.

NVD Source

Technical Analysis

CVE-2026-42565 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation does not require any privileges, though user interaction (Required) is needed, which slightly reduces the risk of mass automated attacks.