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TI-2026-25568 Aliases CVE-2026-33137GHSA-qrvh-r3f2-9h4r

XWiki Platform has an Unauthenticated XAR Import via REST /wikis/{wikiName}

Priority MEDIUM 49CWE-862Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Security bypass
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA and GitHub. Impact type from CWE-862.

Summary

XWiki Platform is a generic wiki platform offering runtime services for applications built on top of it. XWiki Platform is a generic wiki platform. In versions starting with 15.10.6 and prior to 18.1.0-rc-1, 17.10.3, 17.4.9, and 16.10.17, the POST /wikis/{wikiName} API executes a XAR import without performing any authentication or authorization checks, allowing an unauthenticated attacker to create or update documents in the target wiki. This vulnerability has been patched in XWiki 16.10.17, 17.4.9, 17.10.3, 18.0.1 and 18.1.0-rc-1.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00594 48th percentileScored 2026-11-07
Fix Fixed xwiki-platform (xwiki): 16.10.17, 17.4.9, 17.10.3 +1org.xwiki.platform:xwiki-platform-rest-server (Maven): 16.10.17, 17.4.9, 17.10.3 +1

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
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
XWikixwiki-platform15.10.6 to before 16.10.17; 17.0.0-rc-1 to before 17.4.9; 17.5.0 to before 17.10.3; 18.0.0-rc-1 to before 18.1.0-rc-116.10.17, 17.4.9, 17.10.3, 18.1.0-rc-1Patch availableCNA
—org.xwiki.platform:xwiki-platform-rest-server (Maven)15.10.6 to before 16.10.1716.10.17Patch availableGHSA-qrvh-r3f2-9h4r
—org.xwiki.platform:xwiki-platform-rest-server (Maven)17.0.0-rc-1 to before 17.4.917.4.9Patch availableGHSA-qrvh-r3f2-9h4r
—org.xwiki.platform:xwiki-platform-rest-server (Maven)17.5.0 to before 17.10.317.10.3Patch availableGHSA-qrvh-r3f2-9h4r
—org.xwiki.platform:xwiki-platform-rest-server (Maven)18.0.0-rc-1 to before 18.1.0-rc-118.1.0-rc-1Patch availableGHSA-qrvh-r3f2-9h4r
  • xwiki-platform VendorXWiki Affected 15.10.6 to before 16.10.17; 17.0.0-rc-1 to before 17.4.9; 17.5.0 to before 17.10.3; 18.0.0-rc-1 to before 18.1.0-rc-1 Fixed in 16.10.17, 17.4.9, 17.10.3, 18.1.0-rc-1 Patch available CNA
  • org.xwiki.platform:xwiki-platform-rest-server (Maven) Vendor— Affected 15.10.6 to before 16.10.17 Fixed in 16.10.17 Patch available GHSA-qrvh-r3f2-9h4r
  • org.xwiki.platform:xwiki-platform-rest-server (Maven) Vendor— Affected 17.0.0-rc-1 to before 17.4.9 Fixed in 17.4.9 Patch available GHSA-qrvh-r3f2-9h4r
  • org.xwiki.platform:xwiki-platform-rest-server (Maven) Vendor— Affected 17.5.0 to before 17.10.3 Fixed in 17.10.3 Patch available GHSA-qrvh-r3f2-9h4r
  • org.xwiki.platform:xwiki-platform-rest-server (Maven) Vendor— Affected 18.0.0-rc-1 to before 18.1.0-rc-1 Fixed in 18.1.0-rc-1 Patch available GHSA-qrvh-r3f2-9h4r

CPE names Threatist (inferred) · 1

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

CPEVersionsRoleVendor
cpe:2.3:a:xwiki:xwiki:*:*:*:*:*:*:*:*——XWiki
  • cpe:2.3:a:xwiki:xwiki:*:*:*:*:*:*:*:* Versions — — ·XWiki

Remediation

  • Fix · CNA xwiki-platform (xwiki) Fixed in 16.10.17, 17.4.9, 17.10.3, 18.1.0-rc-1
  • Fix · GHSA-qrvh-r3f2-9h4r org.xwiki.platform:xwiki-platform-rest-server (Maven) Fixed in 16.10.17 Advisory →
  • Fix · GHSA-qrvh-r3f2-9h4r org.xwiki.platform:xwiki-platform-rest-server (Maven) Fixed in 17.4.9 Advisory →
  • Fix · GHSA-qrvh-r3f2-9h4r org.xwiki.platform:xwiki-platform-rest-server (Maven) Fixed in 17.10.3 Advisory →
  • Fix · GHSA-qrvh-r3f2-9h4r org.xwiki.platform:xwiki-platform-rest-server (Maven) Fixed in 18.1.0-rc-1 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-33137
  2. 2026-10-03 Alias added: GHSA-qrvh-r3f2-9h4r
  3. 2026-10-25 EPSS moved to the below the 50th percentile

References

Advisory 1

Other 4

  • TI-2025-18595 Remote code execution as guest via SolrSearchMacros request in xwiki KEVCVSS 3.1CRITICAL 9.8
  • TI-2023-25214 Remote code execution through the section parameter in Administration as guest in XWiki Platform CVSS 3.1CRITICAL 10.0
  • TI-2025-23500 XWiki Platform vulnerable to SQL injection through getdeleteddocuments.vm template sort parameter CVSS 4.0CRITICAL 9.3
  • TI-2025-23979 org.xwiki.platform:xwiki-platform-rest-server allows SQL injection in query endpoint of REST API CVSS 4.0CRITICAL 9.3
  • TI-2024-20829 XWiki Platform: Remote code execution from account via SearchSuggestSourceSheet CVSS 3.1CRITICAL 10.0
  • TI-2024-14375 XWiki Remote Code Execution vulnerability via user registration CVSS 3.1CRITICAL 10.0
See all 304 →

Sources

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