Is CVE-2026-55463 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-55463 being exploited in the wild.

How severe is CVE-2026-55463?

Medium severity, with a CVSS score of 6.5, published 23 October 2026.

Which products and versions are affected?

Intranda Goobi viewer core 4.11.0 to before 26.05.

Is there a fix for CVE-2026-55463?

Yes: fixed in version 26.05. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

How is CVE-2026-55463 attacked?

It is attacked over the network, in a web application.

Am I affected by CVE-2026-55463?

Check whether you run Intranda Goobi viewer core 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.

CVE-2026-55463: Goobi viewer WebSocket authentication bypass in multiple endpoints

CVE-2026-55463 · Severity: medium · CVSS 6.5 · Published 2026-10-23

Goobi viewer is a web application used by cultural institutions to display digitized materials and enable crowdsourced review work. Multiple WebSocket endpoints fail to verify user authentication and validate request origins, allowing unauthenticated attackers to disrupt crowdsourcing workflows by sending forged lock messages that prevent legitimate reviewers from working.

Technologies: Intranda Goobi viewer core. Vendors: Intranda.

Quick answers

Is CVE-2026-55463 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-55463 being exploited in the wild.
How severe is CVE-2026-55463?: Medium severity, with a CVSS score of 6.5, published 23 October 2026.
Which products and versions are affected?: Intranda Goobi viewer core 4.11.0 to before 26.05.
Is there a fix for CVE-2026-55463?: Yes: fixed in version 26.05. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-55463 attacked?: It is attacked over the network, in a web application.
Am I affected by CVE-2026-55463?: Check whether you run Intranda Goobi viewer core 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.

How to fix

Fixed in: version 26.05

Technical details

Four Jakarta WebSocket endpoints (DownloadTaskEndpoint, CampaignEndpoint, AutocompleteEndpoint, UserEndpoint) in goobi-viewer-core lack authentication checks on session cookies and do not validate the Origin header against an allowlist. An unauthenticated attacker can connect over the network to these endpoints; the CampaignEndpoint is particularly dangerous as it allows manipulation of the in-process page-lock map and injection of forged lock state messages.

Affected products

intranda goobi-viewer-core 4.11.0 to before 26.05

Timeline

2026-10-23: disclosed
2026-05-28: patched

References

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