CVE-2026-55463

MEDIUM 6.5

Goobi viewer: WebSocket endpoints lack server-side authentication and origin validation

CVSS Score

6.5

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-306 CWE-862 CWE-1385
Vendor	intranda
Product	goobi-viewer-core
Published	Oct 23, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

Low

Availability

None

Affected Versions

intranda / goobi-viewer-core

>= 4.11.0, < 26.05

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/intranda/goobi-viewer-core/security/advisories/GHSA-h5m9-fpvw-qr36 github.com: https://github.com/intranda/goobi-viewer-core/commit/8714ca81065d2c2c6e614a1ee6753de65cbe3412 github.com: https://github.com/intranda/goobi-viewer-core/releases/tag/v26.05