EUVD-2026-31157
GHSA-qrvh-r3f2-9h4r
CVSS VectorNVD
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Lifecycle Timeline
3DescriptionNVD
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 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.
AnalysisAI
{wikiName} REST endpoint, which was missing authorization checks. Affects all releases prior to 16.10.17, 17.4.9, 17.10.3, 18.0.1, and 18.1.0-rc-1. …
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RemediationAI
Within 24 hours: Identify all instances of XWiki Platform and document current versions in use. Within 7 days: Upgrade to patched versions (16.10.17, 17.4.9, 17.10.3, 18.0.1, or 18.1.0-rc-1 depending on current branch). …
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External POC / Exploit Code
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