Goobi viewer: Unauthenticated Solr Streaming Expression Proxy

The Goobi viewer is a web application that allows digitised material to be displayed in a web browser. From 4.8.0 to before 26.04.1, the Goobi viewer REST endpoint POST /api/v1/index/stream accepted an arbitrary Solr streaming expression from unauthenticated network clients and forwarded it to the backend Solr server without restriction. An attacker could read the complete Solr index and, in default Solr deployments, also modify or delete indexed records. This vulnerability is fixed in 26.04.1.

Problem type

CWE-306: Missing Authentication for Critical Function

Affected products

intranda

goobi-viewer-core

>= 4.8.0, < 26.04.1 - AFFECTED

References

https://github.com/intranda/goobi-viewer-core/security/advisories/GHSA-2rgp-f66f-4499

https://github.com/intranda/goobi-viewer-core/security/advisories/GHSA-2rgp-f66f-4499

x_refsource_CONFIRM

https://github.com/intranda/goobi-viewer-core/commit/326980f24ce1e7cfabf658dd5f615934ca68ebbd

https://github.com/intranda/goobi-viewer-core/commit/326980f24ce1e7cfabf658dd5f615934ca68ebbd

x_refsource_MISC

https://github.com/intranda/goobi-viewer-core/commit/6bfb1cbd4250b0b347e84a80f38e8bf46acac705

https://github.com/intranda/goobi-viewer-core/commit/6bfb1cbd4250b0b347e84a80f38e8bf46acac705

x_refsource_MISC

GitHub Security Advisories

GHSA-2rgp-f66f-4499

Goobi viewer - Core: Unauthenticated Solr Streaming Expression Proxy

https://github.com/advisories/GHSA-2rgp-f66f-4499

Summary

The Goobi viewer REST endpoint POST /api/v1/index/stream accepted an arbitrary Solr streaming expression from unauthenticated network clients and forwarded it to the backend Solr server without restriction. An attacker could read the complete Solr index and, in default Solr deployments, also modify or delete indexed records.

The API endpoint has now been removed.

Impact

Complete Solr index read without authentication. All documents indexed by the viewer including those protected by access conditions such as moving walls, licence requirements or IP restrictions - can be read in full.
Index data modification. update() streaming expressions overwrite indexed field values. An attacker can alter metadata, change ACCESSCONDITION values, or corrupt document structure.
Index data deletion. delete() streaming expressions permanently remove documents. A single expression can delete the entire collection, requiring a full re-index to recover.

Patches

The endpoint was removed in 326980f24c

Workarounds

Until an update can be deployed, the endpoint should be blocked by a reverse proxy or in the tomcat configuration.

For Apache httpd the following block can be used in the vhost configuration:

<LocationMatch ^.*api/v[12]/index/stream.*$>
    Require all denied
</LocationMatch>

Alternatively the following security constraint can be added in tomcat via the relevant web.xml:

<security-constraint>
      <web-resource-collection>
        <web-resource-name>blocked endpoint</web-resource-name>
        <url-pattern>/api/v1/index/stream</url-pattern>
        <url-pattern>/api/v1/index/stream/*</url-pattern>
      </web-resource-collection>
      <auth-constraint/>
</security-constraint>

References

Fix commit: 326980f24c
Introducing commit: 6bfb1cbd42
Solr Streaming Expressions reference

Contact

If you have any questions or comments about this advisory:

Email us at support@intranda.com

github.com

https://github.com/intranda/goobi-viewer-core/security/advisories/GHSA-2rgp-f66f-4499

github.com

https://github.com/intranda/goobi-viewer-core/commit/326980f24ce1e7cfabf658dd5f615934ca68ebbd

github.com

https://github.com/intranda/goobi-viewer-core/releases/tag/v26.04.1

github.com

https://github.com/advisories/GHSA-2rgp-f66f-4499

JSON source

https://cveawg.mitre.org/api/cve/CVE-2026-45083

Click to expand

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