CVE-2026-23734: XWiki Platform has path traversal via resources parameter in ssx and jsx endpoints when using leading slash
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.
Published May 26, 2026
Affected packages
org.xwiki.commons:xwiki-commons-classloader-api
- Ecosystem
- Maven
- Affected
- >= 4.2-milestone-2, < 16.10.17
- Fixed in
- 16.10.17
- Check
mvn dependency:tree -Dincludes=org.xwiki.commons:xwiki-commons-classloader-api
org.xwiki.commons:xwiki-commons-classloader-api
- Ecosystem
- Maven
- Affected
- >= 17.0.0-rc-1, < 17.4.9
- Fixed in
- 17.4.9
- Check
mvn dependency:tree -Dincludes=org.xwiki.commons:xwiki-commons-classloader-api
org.xwiki.commons:xwiki-commons-classloader-api
- Ecosystem
- Maven
- Affected
- >= 17.5.0, < 17.10.3
- Fixed in
- 17.10.3
- Check
mvn dependency:tree -Dincludes=org.xwiki.commons:xwiki-commons-classloader-api
org.xwiki.commons:xwiki-commons-classloader-api
- Ecosystem
- Maven
- Affected
- >= 18.0.0-rc-1, < 18.1.0-rc-1
- Fixed in
- 18.1.0-rc-1
- Check
mvn dependency:tree -Dincludes=org.xwiki.commons:xwiki-commons-classloader-api
Advisory details
From the GitHub Advisory Database (CC BY 4.0).
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
- Email us at [Security Mailing List](mailto:[email protected])
Attribution
The vulnerability was reported by Michał Kołek.
Credited to majkelstick.
References
- https://github.com/xwiki/xwiki-commons/security/advisories/GHSA-xq3r-2qv5-vqqm
- https://nvd.nist.gov/vuln/detail/CVE-2026-23734
- https://github.com/xwiki/xwiki-commons/commit/a979cafd89f6a9c9c0b9ab19744d672df64429bf
- https://jira.xwiki.org/browse/XCOMMONS-3547
- https://github.com/advisories/GHSA-xq3r-2qv5-vqqm
How this page is made: the data panel comes from the GitHub Advisory Database, CISA’s KEV catalog, the NVD and FIRST EPSS, and updates twice a day. No analysis has been written for this entry yet. Methodology