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TI-2021-10172 Aliases CVE-2021-29459GHSA-5c66-v29h-xjh8

XSS cross site scripting in xwiki-platform

Priority MEDIUM 43CWE-79Published · Updated

Key facts

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

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

Summary

XWiki Platform is a generic wiki platform offering runtime services for applications built on top of it. It is possible to persistently inject scripts in XWiki versions prior to 12.6.3 and 12.8. Unregistred users can fill simple text fields. Registered users can fill in their personal information and (if they have edit rights) fill the values of static lists using App Within Minutes. There is no easy workaround except upgrading XWiki. The vulnerability has been patched on XWiki 12.8 and 12.6.3.

Why it matters now

EPSS 0.01123 66th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed xwiki-platform (xwiki): 12.6.3, 12.8org.xwiki.platform:xwiki-platform-oldcore (Maven): 12.6.3, 12.8+1 more product

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
XWikixwiki-platformbefore 12.6.3; 12.6.4 to before 12.812.6.3, 12.8Patch availableCNA
—org.xwiki.platform:xwiki-platform-oldcore (Maven)before 12.6.312.6.3Patch availableGHSA-5c66-v29h-xjh8
—org.xwiki.platform:xwiki-platform-oldcore (Maven)12.6.4 to before 12.812.8Patch availableGHSA-5c66-v29h-xjh8
—org.xwiki.platform:xwiki-platform-web (Maven)before 12.6.312.6.3Patch availableGHSA-5c66-v29h-xjh8
—org.xwiki.platform:xwiki-platform-web (Maven)12.6.4 to before 12.812.8Patch availableGHSA-5c66-v29h-xjh8
  • xwiki-platform VendorXWiki Affected before 12.6.3; 12.6.4 to before 12.8 Fixed in 12.6.3, 12.8 Patch available CNA
  • org.xwiki.platform:xwiki-platform-oldcore (Maven) Vendor— Affected before 12.6.3 Fixed in 12.6.3 Patch available GHSA-5c66-v29h-xjh8
  • org.xwiki.platform:xwiki-platform-oldcore (Maven) Vendor— Affected 12.6.4 to before 12.8 Fixed in 12.8 Patch available GHSA-5c66-v29h-xjh8
  • org.xwiki.platform:xwiki-platform-web (Maven) Vendor— Affected before 12.6.3 Fixed in 12.6.3 Patch available GHSA-5c66-v29h-xjh8
  • org.xwiki.platform:xwiki-platform-web (Maven) Vendor— Affected 12.6.4 to before 12.8 Fixed in 12.8 Patch available GHSA-5c66-v29h-xjh8

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:xwiki:xwiki:*:*:*:*:*:*:*:*before 12.6.3; 12.6.4 to before 12.8VulnerableXWiki
  • cpe:2.3:a:xwiki:xwiki:*:*:*:*:*:*:*:* Versions before 12.6.3; 12.6.4 to before 12.8 Vulnerable ·XWiki

Remediation

  • Fix · CNA xwiki-platform (xwiki) Fixed in 12.6.3, 12.8
  • Fix · GHSA-5c66-v29h-xjh8 org.xwiki.platform:xwiki-platform-oldcore (Maven) Fixed in 12.6.3 Advisory →
  • Fix · GHSA-5c66-v29h-xjh8 org.xwiki.platform:xwiki-platform-oldcore (Maven) Fixed in 12.8 Advisory →
  • Fix · GHSA-5c66-v29h-xjh8 org.xwiki.platform:xwiki-platform-web (Maven) Fixed in 12.6.3 Advisory →
  • Fix · GHSA-5c66-v29h-xjh8 org.xwiki.platform:xwiki-platform-web (Maven) Fixed in 12.8 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-29459
  2. 2026-10-03 Alias added: GHSA-5c66-v29h-xjh8

References

Exploit 1

Advisory 1

  • 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 247 →

Sources

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