anonhaven

CVE-2026-55463

MEDIUM CVSS 3.1: 6.5 EPSS 0.19%
Updated Oct 23, 2026
Parameter Value
CVSS 6.5 (MEDIUM)
Affected Versions before 26.05
Fixed In 26.05
Type CWE-306 (Missing Authentication for Critical Function), CWE-1385, CWE-862 (Missing Authorization)
Public PoC No

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.

Attack Parameters

Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed

Impact Assessment

Confidentiality
Low
Partial data leak
Integrity
Low
Partial data modification
Availability
None
No disruption

CVSS Vector v3.1

Weakness Type (CWE)

CWE-306 Missing Authentication for Critical Function
CWE-1385
CWE-862 Missing Authorization

References 3

https://github.com/intranda/goobi-viewer-core/commit/8714ca81065d2c2c6e614a1ee6…
security-advisories@github.com
https://github.com/intranda/goobi-viewer-core/releases/tag/v26.05
security-advisories@github.com
https://github.com/intranda/goobi-viewer-core/security/advisories/GHSA-h5m9-fpv…
security-advisories@github.com
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