Summary
XWiki Platform vulnerable to potential arbitrary file writing using path traversal from (subwiki) admin
Workarounds
XWiki is not aware of any workarounds except for being careful whom developers grant script and admin rights to.
Resources
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.
Affected versions
Security releases
Kodem intelligence
Severity tells you how bad this could be in the worst case. It does not tell you whether you are exposed. Exploitability and impact are functions of runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A vulnerable package can sit in your dependency tree and never run.
Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter. Kodem's runtime-powered SCA identifies whether this CVE is reachable in your applications.
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This vulnerability has been patched in XWiki 16.10.17, 17.4.9, 17.10.3, and 18.0.0RC1.
Frequently Asked Questions
- What is CVE-2026-48047? CVE-2026-48047 is a medium-severity security vulnerability in org.xwiki.platform:xwiki-platform-webjars-api (maven), affecting versions >= 9.6-rc-1, < 16.10.17. It is fixed in 16.10.17, 17.4.9, 17.10.3.
- Which versions of org.xwiki.platform:xwiki-platform-webjars-api are affected by CVE-2026-48047? org.xwiki.platform:xwiki-platform-webjars-api (maven) versions >= 9.6-rc-1, < 16.10.17 is affected.
- Is there a fix for CVE-2026-48047? Yes. CVE-2026-48047 is fixed in 16.10.17, 17.4.9, 17.10.3. Upgrade to this version or later.
- Is CVE-2026-48047 exploitable, and should I be worried? Whether CVE-2026-48047 is exploitable in your environment depends on whether the vulnerable code is present and reachable. A CVSS score is a worst-case rating; it does not account for your specific deployment, configuration, or usage patterns. Kodem, an Intelligent Application Security platform, uses runtime intelligence to show which vulnerabilities actually execute in production, so you can focus on the ones that represent real risk. Get a demo
- What actually determines whether CVE-2026-48047 is exploitable, and how bad it is? Exploitability and impact are not fixed properties of a CVE. They depend on runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A high CVSS score on a dependency that never runs is not the same as real risk. Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter.
- How do I fix CVE-2026-48047?
- Upgrade
org.xwiki.platform:xwiki-platform-webjars-apito 16.10.17 or later - Upgrade
org.xwiki.platform:xwiki-platform-webjars-apito 17.4.9 or later - Upgrade
org.xwiki.platform:xwiki-platform-webjars-apito 17.10.3 or later
- Upgrade