{"id":"CVE-2026-55463","published":"2026-10-23T15:17:33.360","lastModified":"2026-10-23T16:28:32.357","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.","cvssScore":6.5,"cvssSeverity":"MEDIUM","cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N","cwes":["CWE-306","CWE-862","CWE-1385"],"vendors":[],"products":[],"references":[{"url":"https://github.com/intranda/goobi-viewer-core/commit/8714ca81065d2c2c6e614a1ee6753de65cbe3412","tags":[]},{"url":"https://github.com/intranda/goobi-viewer-core/releases/tag/v26.05","tags":[]},{"url":"https://github.com/intranda/goobi-viewer-core/security/advisories/GHSA-h5m9-fpvw-qr36","tags":[]}],"exploitRefs":[{"url":"https://github.com/intranda/goobi-viewer-core/commit/8714ca81065d2c2c6e614a1ee6753de65cbe3412","tags":[]},{"url":"https://github.com/intranda/goobi-viewer-core/releases/tag/v26.05","tags":[]},{"url":"https://github.com/intranda/goobi-viewer-core/security/advisories/GHSA-h5m9-fpvw-qr36","tags":[]}],"hasPoc":true,"ai":null}