CVE-2026-33137

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.

Affected Software

VendorProductVersion RangeStatus
xwikixwiki-platform>= 15.10.6, < 16.10.17affected
xwikixwiki-platform>= 17.0.0-rc-1, < 17.4.9affected
xwikixwiki-platform>= 17.5.0, < 17.10.3affected
xwikixwiki-platform>= 18.0.0-rc-1, < 18.1.0-rc-1affected

Weaknesses

  • CWE-862: CWE-862: Missing Authorization

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: yes
    • Technical Impact: total

References