GHSA-qrvh-r3f2-9h4r
Fix: xwiki/xwiki-platform@4b7b95bGHSA-qrvh-r3f2-9h4r is a CWE-862 vulnerability in org.xwiki.platform:xwiki-platform-rest-server. O3 Security confirms whether GHSA-qrvh-r3f2-9h4r is actually reachable in your code before you act, and blocks exploitation at runtime until you patch.
XWiki Platform has an Unauthenticated XAR Import via REST /wikis/{wikiName}
Exploitation Status
No confirmed exploitation observed yet
- CISA assesses this as automatable — exploitation doesn’t require manual, per-target effort, which raises the odds of mass scanning and opportunistic attacks.
- A successful exploit gives an attacker total control of the affected component, not partial access.
- CISA’s own triage has not observed active exploitation or public proof-of-concept code for this CVE as of its last assessment.
Exploitation and automatability from CISA’s SSVC triage for GHSA-qrvh-r3f2-9h4r.
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.
Real-World Exposure
org.xwiki.platform:xwiki-platform-rest-server☕org.xwiki.platform:xwiki-platform-rest-server☕org.xwiki.platform:xwiki-platform-rest-server☕org.xwiki.platform:xwiki-platform-rest-serverReal-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
POST /wikis/{wikiName} executes a XAR import without performing any authentication or authorization checks, allowing an unauthenticated attacker to create or update documents in the target wiki
Patches
This vulnerability has been patched in XWiki 16.10.17, 17.4.9, 17.10.3, 18.0.1 and 18.1.0-rc-1.
Workarounds
XWiki is not aware of any workarounds other than adding a rule into an HTTP proxy to prevent access POST request in the /wikis/{wikiName}[/] endpoint.
Resources
- https://jira.xwiki.org/browse/XWIKI-23953
- https://github.com/xwiki/xwiki-platform/commit/4b7b95b79256374d487e9ece1dc48f527966990f
For more information
If there are any questions or comments about this advisory:
- Open an issue in Jira XWiki.org
- Send an email to the Security Mailing List
Attribution
Reported by Sho Odagiri (GMO Cybersecurity by Ierae, Inc.).
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| ☕Maven | org.xwiki.platform:xwiki-platform-rest-server | ≥ 15.10.6&&< 16.10.17 | 16.10.17 |
| ☕Maven | org.xwiki.platform:xwiki-platform-rest-server | ≥ 17.0.0-rc-1&&< 17.4.9 | 17.4.9 |
| ☕Maven | org.xwiki.platform:xwiki-platform-rest-server | ≥ 17.5.0&&< 17.10.3 | 17.10.3 |
| ☕Maven | org.xwiki.platform:xwiki-platform-rest-server | ≥ 18.0.0-rc-1&&< 18.1.0-rc-1 | 18.1.0-rc-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-rest-server. 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-rest-server to 16.10.17 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-qrvh-r3f2-9h4r 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-qrvh-r3f2-9h4r 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-qrvh-r3f2-9h4r. 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-qrvh-r3f2-9h4r in your dependencies?
O3 detects GHSA-qrvh-r3f2-9h4r across Maven dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.