Goobi viewer - Core: Unauthenticated Solr Streaming Expression Proxy

Exploitation

No confirmed exploitation recorded. Patch Next marks exploitation only from CISA KEV.

CVSS

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

EPSS

• CVE-2026-45083: 0.41% estimated exploitation activity in the next 30 days; percentile 35.27 (FIRST EPSS, 2026-11-03). This is a model estimate, not proof of exploitation or customer exposure.

As published by the source; long descriptions are shortened.

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…

Published by the source

13 May 2026, 15:33 UTC

Last modified by the source

8 Jun 2026, 23:55 UTC

Source last checked

26 Oct 2026, 16:45 UTC

1. Revision 1 · created · 26 Oct 2026

   Published from ghsa record GHSA-2rgp-f66f-4499

Preview the exact text before you copy it. Commands are read-only suggestions; review them before running anything.

# Patch Next advisory brief: CVE-2026-45083

Advisory: Goobi viewer - Core: Unauthenticated Solr Streaming Expression Proxy
IDs: CVE-2026-45083, GHSA-2rgp-f66f-4499
Record: https://patchnext.com/advisories/cve-2026-45083 (revision 1, source checked 26 Oct 2026, 16:45 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: Critical (CVSS 9.8)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Vendor response not established. A vendor fix does not mean a deployment is fixed.

## Affected components
- Maven io.goobi.viewer:viewer-core: affected >= 4.8.0, <= 26.04

## Suggested inspection (read-only)
- Maven io.goobi.viewer:viewer-core: check the installed version with your package manager.

## Supported action
No complete vendor fix is recorded. Follow the primary source's mitigation guidance and check this record again before closing anything.

## Required regression checks
- Run the test suite and a production build.
- Exercise the features that depend on io.goobi.viewer:viewer-core.
- Repeat the inspection and confirm that only fixed versions remain installed.

## Rollback considerations
- Keep the previous lockfile and deployment artifact. Rolling back reinstates the vulnerable version, so apply any documented mitigation while you fix forward.

## Unresolved questions
- Which deployments run an affected version?
- Exploitation status can change. Check again before lowering the priority.
- Mark the work resolved only after the fixed version is verified in production.

## Sources
- Verified: https://github.com/advisories/GHSA-2rgp-f66f-4499 (GitHub-reviewed advisory GHSA-2rgp-f66f-4499 lists affected ranges: Maven io.goobi.viewer:viewer-core >=4.8.0 <=26.04)

Commands are suggestions: review each one before running it.