Loading...
Skip to main content
GeekWala

CVE-2026-23734 — Vulnerability in...

CRITICAL

XWiki Platform has path traversal via resources parameter in ssx and jsx endpoints when using leading slash

Published May 26, 2026Updated May 26, 2026Source: osv

Summary

### Impact It's possible to get access and read configuration files by using URLs such as `http://localhost:8080/bin/ssx/Main/WebHome?resource=/../../WEB-INF/xwiki.cfg&minify=false`. This can apparently be reproduced on Tomcat instances. ### Patches This has been patched in 18.0.0-rc-1, 17.10.3, 17.4.9, 16.10.17. ### Workarounds There is no known workaround, other than upgrading XWiki. ### References * https://jira.xwiki.org/browse/XCOMMONS-3547 * https://github.com/xwiki/xwiki-commons/commit/a979cafd89f6a9c9c0b9ab19744d672df64429bf ### For more information If you have any questions or comments about this advisory: * Open an issue in [Jira XWiki.org](https://jira.xwiki.org/) * Email us at [Security Mailing List](mailto:security@xwiki.org) ### Attribution The vulnerability was reported by Michał Kołek.

Advisory Timeline

  • First published May 26, 2026 (139 days ago).
  • Last revised May 26, 2026 — 0 days after initial publication.

Remediation

Upgrade to the fixed version using your package manager.

Maven
Update org.xwiki.commons:xwiki-commons-classloader-api to 17.4.9 or later
<!-- Update pom.xml dependency version to 17.4.9 for org.xwiki.commons:xwiki-commons-classloader-api -->
Maven
Update org.xwiki.commons:xwiki-commons-classloader-api to 16.10.17 or later
<!-- Update pom.xml dependency version to 16.10.17 for org.xwiki.commons:xwiki-commons-classloader-api -->
Maven
Update org.xwiki.commons:xwiki-commons-classloader-api to 18.1.0-rc-1 or later
<!-- Update pom.xml dependency version to 18.1.0-rc-1 for org.xwiki.commons:xwiki-commons-classloader-api -->
Maven
Update org.xwiki.commons:xwiki-commons-classloader-api to 17.10.3 or later
<!-- Update pom.xml dependency version to 17.10.3 for org.xwiki.commons:xwiki-commons-classloader-api -->

After upgrading, run your dependency scanner again to confirm the vulnerability is resolved.

Affected Packages (4)

Affects 1 ecosystem: maven (1).

PackageEcosystemAffectedFixed In
org.xwiki.commons:xwiki-commons-classloader-api
maven
17.0.0, 17.0.0-rc-1, 17.1.0, 17.1.0-rc-1 (+16 more)17.4.9
org.xwiki.commons:xwiki-commons-classloader-api
maven
10.0, 10.1, 10.1-rc-1, 10.10 (+480 more)16.10.17
org.xwiki.commons:xwiki-commons-classloader-api
maven
18.0.0, 18.0.0-rc-1, 18.0.118.1.0-rc-1
org.xwiki.commons:xwiki-commons-classloader-api
maven
17.10.0, 17.10.0-rc-1, 17.10.1, 17.10.2 (+9 more)17.10.3

Vulnerability Classification

Common Weakness Enumeration (CWE) identifiers for this vulnerability type.

CVSS Score Breakdown

What the CVSS (Common Vulnerability Scoring System) 9.8 score means for each attack dimension.

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
—
Confidentiality
—
Integrity
—
Availability
—

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

References

Frequently Asked Questions

What is CVE-2026-23734?
XWiki Platform has path traversal via resources parameter in ssx and jsx endpoints when using leading slash This vulnerability has been assigned a severity rating of CRITICAL (CVSS score: 9.8/10).
How do I check if my project is affected by CVE-2026-23734?
CVE-2026-23734 affects org.xwiki.commons:xwiki-commons-classloader-api. Use GeekWala's free vulnerability scanner to check your dependencies against CVE-2026-23734 and 200,000+ other known vulnerabilities.

Severity & Exploitability

CVSS Score
9.8

Exploitation is straightforward and causes maximum impact. Patch immediately.

Also Known As

GHSA-xq3r-2qv5-vqqm

Related CVEs

More Maven advisories

Check if you're affected

Scan your dependencies to see if this vulnerability affects your projects.

Scan Your Dependencies