CVE-2026-33137
XWiki Platform has an Unauthenticated XAR Import via REST /wikis/{wikiName}
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-862 |
| Vendor | xwiki |
| Product | xwiki-platform |
| Published | May 20, 2026 |
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Affected Versions
xwiki / xwiki-platform
< 16.10.17 >= 17.0.0-rc-1, < 17.4.9 >= 17.5.0, < 17.10.3 >= 18.0.0-rc-1, < 18.1.0-rc-1