XWiki configuration files can be accessed through the webjars API
### Impact It's possible to get access and read configuration files by using URLs such as http://localhost:8080/xwiki/webjars/wiki%3Axwiki/..%2F..%2F..%2F..%2F..%2FWEB-INF%2Fxwiki.cfg. The trick here is to encode the / which is decoded when parsing the URL segment, but not re-encoded when assembling the file path. ### Patches This has been patched in 17.4.0-rc-1, 16.10.7. ### Workarounds There is no known workaround, other than upgrading XWiki. ### References * https://jira.xwiki.org/browse/XWIKI-19350 * https://github.com/xwiki/xwiki-platform/commit/9e7b4c03f2143978d891109a17159f73d4cdd318#diff-45ea9c87d5fb68cd5db0da7f78cf25e76f1325f5fe56e21618b21786fc706236R80-R81 ### 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)
describes (1)
Related CVEs.
| ID | severity | exploitable | ||
|---|---|---|---|---|
| CVE-2025-55747US | critical9.1 | — | ||
XWiki Platform is a generic wiki platform offering runtime services for applications built on top of it. In versions 6.1-milestone-2 through 16.10.6, configuration files are acces… | ||||
references
External citations — patches, advisories, analysis.
- https://github.com/xwiki/xwiki-platformPACKAGE
- https://github.com/xwiki/xwiki-platform/commit/9e7b4c03f2143978d891109a17159f73d4cdd318#diff-45ea9c87d5fb68cd5db0da7f78cf25e76f1325f5fe56e21618b21786fc706236R80-R81WEB
- https://github.com/xwiki/xwiki-platform/security/advisories/GHSA-qww7-89xh-x7m7WEB
- https://jira.xwiki.org/browse/XWIKI-19350WEB
- https://nvd.nist.gov/vuln/detail/CVE-2025-55747ADVISORY
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