Quick answers
- Is CVE-2026-53989 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-53989 being exploited in the wild.
- How severe is CVE-2026-53989?
- Medium severity, with a CVSS score of 4.7, published 29 September 2026.
- Which products and versions are affected?
- Finsys Dockhand before 1.0.36.
- Is there a fix for CVE-2026-53989?
- A patch was published on 2026-06-27: v1.0.36 released Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
- How is CVE-2026-53989 attacked?
- It is attacked over the network, in a web application.
- Am I affected by CVE-2026-53989?
- Check whether you run Finsys Dockhand at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
An unvalidated redirect query parameter in the OIDC initiation endpoint allows open redirect attacks. Attackers can exploit this to capture authorization codes via the Referer header during the OIDC callback flow, enabling follow-up phishing attacks against authenticated users. The vulnerability is fixed in version 1.0.36.
Affected products
- Finsys Dockhand before 1.0.36
Timeline
- 2026-09-29: disclosed
- 2026-06-27: patched: v1.0.36 released