XWiki Platform up to 16.10.16/17.4.8/17.10.2 WebJars API path traversal

Summaryinfo

A vulnerability classified as problematic has been found in XWiki Platform up to 16.10.16/17.4.8/17.10.2. This issue affects some unknown processing of the component WebJars API. This manipulation causes path traversal. This vulnerability is tracked as CVE-2026-48047. The attack is possible to be carried out remotely. No exploit exists.

Detailsinfo

A vulnerability classified as problematic was found in XWiki Platform up to 16.10.16/17.4.8/17.10.2. Affected by this vulnerability is some unknown processing of the component WebJars API. The manipulation with an unknown input leads to a path traversal vulnerability. The CWE definition for the vulnerability is CWE-22. The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

XWiki Platform WebJars API is a package for XWiki, a generic wiki platform. Starting with version 9.6-rc-1 and prior to versions 16.10.17, 17.4.9, and 17.10.3, a potential path traversal vulnerability allow an attacker who manages to get a malicious WebJar extension installed on the wiki to write arbitrary files. While the consequences could be severe like overriding configuration files and setting the superadmin password, the attack first requires that the attacker already has admin access to at least a subwiki to be able to install a malicious extension. Further, the attacker needs to publish a malicious extension in an extension repository that is configured in the instance. This vulnerability has been patched in XWiki 16.10.17, 17.4.9, 17.10.3, and 18.0.0RC1. XWiki is not aware of any workarounds except for being careful whom developers grant script and admin rights to.

It is possible to read the advisory at github.com. This vulnerability is known as CVE-2026-48047 since 05/20/2026. The exploitation appears to be easy. The attack can be launched remotely. Additional levels of successful authentication are required for exploitation. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1006 according to MITRE ATT&CK.

Upgrading to version 16.10.17, 17.4.9 or 17.10.3 eliminates this vulnerability.

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Productinfo

Type

• Content Management System

Vendor

• XWiki

Name

• Platform

Version

• 16.10.0
• 16.10.1
• 16.10.2
• 16.10.3
• 16.10.4
• 16.10.5
• 16.10.6
• 16.10.7
• 16.10.8
• 16.10.9
• 16.10.10
• 16.10.11
• 16.10.12
• 16.10.13
• 16.10.14
• 16.10.15
• 16.10.16
• 17.4.0
• 17.4.1
• 17.4.2
• 17.4.3
• 17.4.4
• 17.4.5
• 17.4.6
• 17.4.7
• 17.4.8
• 17.10.0
• 17.10.1
• 17.10.2

License

• open-source

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CPE 2.2info

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Entryinfo

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