CVE-2026-42565
MEDIUM
4,3
Source: [email protected]
Attack Vector: network
Attack Complexity: low
Privileges Required: none
User Interaction: required
Scope: unchanged
Confidentiality: none
Integrity: low
Availability: none
Description
AI Translation Available
@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.
601
URL Redirection to Untrusted Site ('Open Redirect')
DraftCommon Consequences
Security Scopes Affected:
Access Control
Confidentiality
Other
Potential Impacts:
Bypass Protection Mechanism
Gain Privileges Or Assume Identity
Other
Applicable Platforms
Technologies:
Web Based, Web Server
https://github.com/workos/authkit-session/commit/f56e1d6214a93160759e5677b7a3d7…
https://github.com/workos/authkit-session/releases/tag/v0.5.1
https://github.com/workos/authkit-session/security/advisories/GHSA-vvvv-983w-r7…