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TI-2026-79937 Aliases CVE-2026-55486

Reflected XSS in Goobi viewer IIIF Auth authorization endpoints

Priority MEDIUM 42CWE-113Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
Code execution, Cross-site scripting
Confidentiality · integrity · availability
High · High · None
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-1336 and CWE-79.

Summary

intranda goobi-viewer-core from 25.08 before 26.05 accepts an origin parameter in the IIIF Auth 2.0 login and token endpoints without validation. The value is written into the Content-Security-Policy frame-ancestors header and into an HTML response without escaping, which allows reflected cross-site scripting (CWE-79). A remote attacker can make a user's browser run script by tricking the user into opening a crafted link.

Written with Claude Haiku 5.5 from the sources below · 2026-10-30

Description from the CNA

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00257 17th percentileScored 2026-11-07
Fix Fixed goobi-viewer-core (intranda): 26.05

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
intrandagoobi-viewer-core25.08 to before 26.0526.05Patch availableCNA
  • goobi-viewer-core Vendorintranda Affected 25.08 to before 26.05 Fixed in 26.05 Patch available CNA

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPEVersionsRoleVendor
cpe:2.3:a:intranda:goobi_viewer_core:*:*:*:*:*:*:*:*——intranda
  • cpe:2.3:a:intranda:goobi_viewer_core:*:*:*:*:*:*:*:* Versions — — ·intranda

Remediation

Upgrade intranda goobi-viewer-core to version 26.05, which contains the patch.

Written with Claude Haiku 5.5 from the sources below · 2026-10-30

  • Fix · CNA goobi-viewer-core (intranda) Fixed in 26.05

Timeline

  1. 2026-10-23 Threatist record created from CVE-2026-55486
  2. 2026-10-30 CISA SSVC decision points changed

References

Other 3

  • TI-2026-79924 Path traversal in Goobi viewer lets malicious servers write files CVSS 3.1CRITICAL 9.8
  • TI-2026-79923 Unauthenticated SSRF and local file inclusion in Goobi viewer CVSS 3.1CRITICAL 9.8
  • TI-2026-32930 Goobi viewer: Unauthenticated Solr Streaming Expression Proxy CVSS 3.1CRITICAL 9.8
  • TI-2020-11897 Path traversal in Goobi viewer Core CVSS 3.1CRITICAL 9.6
  • TI-2026-79920 Predictable password reset token in Goobi viewer CVSS 3.1MEDIUM 6.5
  • TI-2026-79935 Goobi viewer WebSocket endpoints lack authentication checks CVSS 3.1MEDIUM 6.5
See all 15 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences