GHSA-mrqg-xmgm-rc5g
HIGHGHSA-mrqg-xmgm-rc5g is a high-severity (CVSS 8.2) vulnerability in org.xwiki.platform:xwiki-platform-oldcore. O3 Security confirms whether GHSA-mrqg-xmgm-rc5g is actually reachable in your code before you act, and blocks exploitation at runtime until you patch.
XWiki's REST APIs can list all pages/spaces, leading to unavailability
Blast Radius
org.xwiki.platform:xwiki-platform-oldcore☕org.xwiki.platform:xwiki-platform-oldcore☕org.xwiki.platform:xwiki-platform-oldcore☕org.xwiki.platform:xwiki-platform-legacy-oldcore☕org.xwiki.platform:xwiki-platform-legacy-oldcore☕org.xwiki.platform:xwiki-platform-legacy-oldcoreReal-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
REST API endpoints like /xwiki/rest/wikis/xwiki/spaces/AnnotationCode/pages/AnnotationConfig/objects/AnnotationCode.AnnotationConfig/0/properties list all available pages as part of the metadata for database list properties, which can exhaust available resources on large wikis.
Patches
This problem has been patched by applying the configured query limit also to the available values for database list properties in XWiki 16.10.16, 17.4.8 and 17.10.1.
Workarounds
We're not aware of any workarounds apart from upgrading the affected modules.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| ☕Maven | org.xwiki.platform:xwiki-platform-oldcore | ≥ 1.8-rc-1&&< 16.10.16 | 16.10.16 |
| ☕Maven | org.xwiki.platform:xwiki-platform-oldcore | ≥ 17.0.0-rc-1&&< 17.4.8 | 17.4.8 |
| ☕Maven | org.xwiki.platform:xwiki-platform-oldcore | ≥ 17.5.0-rc-1&&< 17.10.1 | 17.10.1 |
| ☕Maven | org.xwiki.platform:xwiki-platform-legacy-oldcore | ≥ 1.8-rc-1&&< 16.10.16 | 16.10.16 |
| ☕Maven | org.xwiki.platform:xwiki-platform-legacy-oldcore | ≥ 17.0.0-rc-1&&< 17.4.8 | 17.4.8 |
| ☕Maven | org.xwiki.platform:xwiki-platform-legacy-oldcore | ≥ 17.5.0-rc-1&&< 17.10.1 | 17.10.1 |
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-oldcore. 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
Update org.xwiki.platform:xwiki-platform-oldcore to 16.10.16 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-mrqg-xmgm-rc5g is resolved across your whole dependency graph.
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-mrqg-xmgm-rc5g 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-mrqg-xmgm-rc5g. 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-mrqg-xmgm-rc5g in your dependencies?
O3 detects GHSA-mrqg-xmgm-rc5g across Maven dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.