XWiki Platform vulnerable to potential arbitrary file writing using path traversal from (subwiki) admin
Impact
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.
Patches
This vulnerability has been patched in XWiki 16.10.17, 17.4.9, 17.10.3, and 18.0.0RC1.
Workarounds
XWiki is not aware of any workarounds except for being careful whom developers grant script and admin rights to.
Resources
Affected software
Click a technology to see all vulnerabilities affecting it.
| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| Java / Kotlin (Maven) | org.xwiki.platform:xwiki-platform-webjars-api | >= 9.6-rc-1, < 16.10.17, >= 17.0.0-rc-1, < 17.4.9, >= 17.5.0-rc-1, < 17.10.3 | 16.10.17, 17.4.9, 17.10.3 |
References
- CVSS vector
CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:L/VI:H/VA:L/SC:N/SI:N/SA:N- Weakness (CWE)
CWE-24- Platform
- Java / Kotlin (Maven)
- Package
org.xwiki.platform:xwiki-platform-webjars-api- Disclosed
- 26.05.2026
- Updated
- 11.10.2026 12:22
Sources and licenses
OSV / GitHub Advisory Database - GHSA-vgwr-23fq-pr7g - CC BY 4.0
Vulnerability history: org.xwiki.platform:xwiki-platform-webjars-api
All published vulnerabilities of this package (Java / Kotlin (Maven)), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 2
- First → latest
- 09.2025 05.2026
- Without a fix
- 0
- Exploited in attacks
- 0
Severity breakdown
- Critical 1
- Medium 1
Disclosures per year
- 2025: 1
- 2026: 1
-
XWiki Platform vulnerable to potential arbitrary file writing using path traversal from (subwiki) admin this entry
Know which vulnerabilities affect your application
With the DockRay integration and software inventory enabled, DockRay checks reported component versions against known vulnerabilities and notifies you about confirmed matches. Coverage depends on the supported technology and available advisory data.