CVE-2026-53989 Dockhand < 1.0.36 Open Redirect via OIDC Initiation Endpoint
Unauthenticated attackers can redirect users to malicious sites via OIDC endpoints, enabling credential phishing and authorization code theft.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-53989?
CVE-2026-53989 is a medium-severity vulnerability in Finsys dockhand, published on 29 Sep 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
Dockhand before 1.0.36 contains an open redirect vulnerability in the OIDC initiation endpoint that allows unauthenticated remote attackers to redirect authenticated users to attacker-controlled sites by injecting an unvalidated redirect query parameter. Attackers can craft a malicious link targeting the OIDC callback flow to capture authorization codes via the Referer header and conduct follow-up credential phishing against any Dockhand account after a legitimate login.
Weakness: CWE-601
Which versions are affected by CVE-2026-53989?
How do I fix CVE-2026-53989?
No fix has been published for CVE-2026-53989 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-53989 being exploited?
There is no known exploitation of CVE-2026-53989 in the wild and no public exploit code.
Sources
Also known as GHSA-35hf-9v83-m378.