CVE-2026-23734
EPSS 0.05%XWiki Platform has path traversal via resources parameter in ssx and jsx endpoints when using leading slash
Description
### 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:[email protected]) ### Attribution The vulnerability was reported by Michał Kołek.
Affected packages (1)
- Maven/org.xwiki.commons:xwiki-commons-classloader-api>= 4.2-milestone-2, < 16.10.17
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 4.0 | — | 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 (5)
- ADVISORYhttps://nvd.nist.gov/vuln/detail/CVE-2026-23734
- PATCHhttps://github.com/xwiki/xwiki-commons
- WEBhttps://github.com/xwiki/xwiki-commons/commit/a979cafd89f6a9c9c0b9ab19744d672df64429bf
- WEBhttps://github.com/xwiki/xwiki-commons/security/advisories/GHSA-xq3r-2qv5-vqqm
- WEBhttps://jira.xwiki.org/browse/XCOMMONS-3547