CVE-2026-55463 Goobi viewer: WebSocket endpoints lack server-side authentication and origin validation
- Exploited in the wild
- Not known
- Fix
- None listed
What is CVE-2026-55463?
CVE-2026-55463 is a medium-severity vulnerability in intranda goobi-viewer-core, published on 23 Oct 2026.
Official description
The Goobi viewer is a web application that allows digitised material to be displayed in a web browser. From version 4.11.0 to before version 26.05, several Jakarta WebSocket endpoints in goobi-viewer-core (DownloadTaskEndpoint, CampaignEndpoint, AutocompleteEndpoint, UserEndpoint) accept connections without verifying that the associated HttpSession belongs to a logged-in user, and none validate the Origin header against an allowlist. An unauthenticated attacker can therefore connect to these endpoints; through CampaignEndpoint this allows polluting the in-process crowdsourcing page-lock map and broadcasting forged lock messages, disrupting reviewers' work. This issue has been patched in version 26.05.
Which versions are affected by CVE-2026-55463?
How do I fix CVE-2026-55463?
No fix has been published for CVE-2026-55463 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-55463 being exploited?
There is no known exploitation of CVE-2026-55463 in the wild and no public exploit code.
Sources
Also known as GHSA-h5m9-fpvw-qr36.