The Goobi viewer is a web application that allows digitised material to be displayed in a web browser. From version 25.08 to before version 26.05, the IIIF Auth 2.0 endpoints auth/login and auth/token in AuthorizationFlowResource accept an origin query parameter without validation and then (1) embed it into the Content-Security-Policy: frame-ancestors response header and (2) embed it into an HTML response body as a JavaScript single-quoted postMessage argument. Because the attacker controls both the login and token calls that initiate the flow, the unescaped value yields reflected XSS.
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
Required
User action required
Impact Assessment
Confidentiality
High
Complete data leak
Integrity
High
Complete data modification
Availability
None
No disruption
CVSS Vector v3.1
Weakness Type (CWE)
References 3
https://github.com/intranda/goobi-viewer-core/commit/0e488c6b02a28c1d1a747dfe39…
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-975w-g9g…
security-advisories@github.com