Vulnerability DatabaseCVE-2026-33137
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CVE-2026-33137
Published:May 20, 2026
Updated:June 11, 2026
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 Packages
https://github.com/xwiki/xwiki-platform.git (GITHUB):
Affected version(s) >=xwiki-platform-17.4.0 <xwiki-platform-17.4.9
Fix Suggestion:
Update to version xwiki-platform-17.4.9
https://github.com/xwiki/xwiki-platform.git (GITHUB):
Affected version(s) >=xwiki-platform-3.0.1 <xwiki-platform-16.10.17
Fix Suggestion:
Update to version xwiki-platform-16.10.17
https://github.com/xwiki/xwiki-platform.git (GITHUB):
Affected version(s) >=xwiki-platform-17.10.0 <xwiki-platform-17.10.3
Fix Suggestion:
Update to version xwiki-platform-17.10.3
https://github.com/xwiki/xwiki-platform.git (GITHUB):
Affected version(s) =xwiki-platform-18.0.0 <xwiki-platform-18.0.1
Fix Suggestion:
Update to version xwiki-platform-18.0.1
org.xwiki.platform:xwiki-platform-rest-server (JAVA):
Affected version(s) >=3.1-milestone-1 <16.10.17
Fix Suggestion:
Update to version 16.10.17
org.xwiki.platform:xwiki-platform-rest-server (JAVA):
Affected version(s) >=17.5.0 <17.10.3
Fix Suggestion:
Update to version 17.10.3
org.xwiki.platform:xwiki-platform-rest-server (JAVA):
Affected version(s) >=17.0.0-rc-1 <17.4.9
Fix Suggestion:
Update to version 17.4.9
org.xwiki.platform:xwiki-platform-rest-server (JAVA):
Affected version(s) >=17.4.0 <17.4.9
Fix Suggestion:
Update to version 17.4.9
org.xwiki.platform:xwiki-platform-rest-server (JAVA):
Affected version(s) >=15.10.6 <16.10.17
Fix Suggestion:
Update to version 16.10.17
org.xwiki.platform:xwiki-platform-rest-server (JAVA):
Affected version(s) =18.0.0 <18.0.1
Fix Suggestion:
Update to version 18.0.1
org.xwiki.platform:xwiki-platform-rest-server (JAVA):
Affected version(s) >=18.0.0-rc-1 <18.1.0-rc-1
Fix Suggestion:
Update to version 18.1.0-rc-1
org.xwiki.platform:xwiki-platform-rest-server (JAVA):
Affected version(s) >=17.10.0 <17.10.3
Fix Suggestion:
Update to version 17.10.3
Related Resources (5)
https://github.com/xwiki/xwiki-platform
https://github.com/xwiki/xwiki-platform/security/advisories/GHSA-qrvh-r3f2-9h4r
https://nvd.nist.gov/vuln/detail/CVE-2026-33137
https://jira.xwiki.org/browse/XWIKI-23953
https://github.com/xwiki/xwiki-platform/commit/4b7b95b79256374d487e9ece1dc48f527966990f
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CVSS v4
Base Score:
9.3
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
HIGH
Vulnerable System Integrity
HIGH
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
9.8
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Weakness Type (CWE)
Missing Authorization
CWE-862
EPSS
Base Score:
0.02