GHSA-9875-cw22-f7cx
XWiki allows remote code execution through default value of wiki macro wiki-type parameters
EPSS Exploitation Probability
EPSS (Exploit Prediction Scoring System) is a daily probability model maintained by FIRST.org. It estimates the likelihood a CVE will be exploited in production environments within the next 30 days, derived from real-world threat intelligence signals.
Blast Radius
org.xwiki.platform:xwiki-platform-rendering-wikimacro-store☕org.xwiki.platform:xwiki-platform-rendering-wikimacro-store☕org.xwiki.platform:xwiki-platform-rendering-wikimacro-store☕org.xwiki.platform:xwiki-platform-rendering-wikimacro-store☕org.xwiki.platform:xwiki-platform-rendering-wikimacro-storeReal-time download stats are indexed for npm and PyPI packages. This vulnerability affects Maven packages — download data is not available via public APIs for these ecosystems.
Description
Impact
Any user with edit right on a page (could be the user's profile) can execute code (Groovy, Python, Velocity) with programming right by defining a wiki macro. This allows full access to the whole XWiki installation and thus impacts its confidentiality, integrity and availability. The main problem is that if a wiki macro parameter allows wiki syntax, its default value is executed with the rights of the author of the document where it is used. This can be exploited by overriding a macro like the children macro that is used in a page that has programming right like the page XWiki.ChildrenMacro and thus allows arbitrary script macros. The full reproduction steps can be found in the original issue.
Patches
This vulnerability has been patched in XWiki 16.4.7, 16.10.3 and 17.0.0 by executing wiki parameters with the rights of the wiki macro's author when the parameter's value is the default value.
Workarounds
We're not aware of any workarounds except for upgrading.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| ☕Maven | org.xwiki.platform:xwiki-platform-rendering-wikimacro-store | ≥ 11.10.11 | No fix |
| ☕Maven | org.xwiki.platform:xwiki-platform-rendering-wikimacro-store | ≥ 12.6.3 | No fix |
| ☕Maven | org.xwiki.platform:xwiki-platform-rendering-wikimacro-store | ≥ 12.8-rc-1&&< 16.4.7 | 16.4.7 |
| ☕Maven | org.xwiki.platform:xwiki-platform-rendering-wikimacro-store | ≥ 16.5.0-rc-1&&< 16.10.3 | 16.10.3 |
| ☕Maven | org.xwiki.platform:xwiki-platform-rendering-wikimacro-store | ≥ 17.0.0-rc-1&&< 17.0.0 | 17.0.0 |
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for org.xwiki.platform:xwiki-platform-rendering-wikimacro-store. O3's reachability analysis confirms whether the vulnerable code path is actually invoked in your application, so you act on real exposure instead of every transitive match.
Fix
No patched version of org.xwiki.platform:xwiki-platform-rendering-wikimacro-store has shipped for GHSA-9875-cw22-f7cx yet. Where your build allows, override or pin the dependency away from the vulnerable range, and apply any maintainer-recommended mitigation.
Workarounds
If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.
How O3 protects you
O3 pinpoints whether GHSA-9875-cw22-f7cx is reachable in your code and exactly where to fix it, then blocks exploitation in production at runtime until the patched version is deployed.
Tailored to GHSA-9875-cw22-f7cx. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.
Frequently Asked Questions
Is GHSA-9875-cw22-f7cx in your dependencies?
O3 detects GHSA-9875-cw22-f7cx across Maven dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.