GHSA-m6q9-p373-g5q8
HIGHGHSA-m6q9-p373-g5q8 is a high-severity (CVSS 7.4) CWE-346 vulnerability in org.keycloak:keycloak-services. O3 Security confirms whether GHSA-m6q9-p373-g5q8 is actually reachable in your code before you act, and blocks exploitation at runtime until you patch.
Keycloak's unvalidated cross-origin messages in checkLoginIframe leads to DDoS
Blast Radius
org.keycloak:keycloak-services☕org.keycloak:keycloak-servicesReal-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
A potential security flaw in the "checkLoginIframe" which allows unvalidated cross-origin messages, enabling potential DDoS attacks. By exploiting this vulnerability, attackers could coordinate to send millions of requests in seconds using simple code, significantly impacting the application's availability without proper origin validation for incoming messages.
Acknowledgements
Special thanks to Adriano Márcio Monteiro from BRZTEC for reporting this issue and helping us improve our project.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| ☕Maven | org.keycloak:keycloak-services | all versions | 22.0.10 |
| ☕Maven | org.keycloak:keycloak-services | ≥ 23.0.0&&< 24.0.3 | 24.0.3 |
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for org.keycloak:keycloak-services. 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.keycloak:keycloak-services to 22.0.10 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-m6q9-p373-g5q8 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-m6q9-p373-g5q8 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-m6q9-p373-g5q8. 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-m6q9-p373-g5q8 in your dependencies?
O3 detects GHSA-m6q9-p373-g5q8 across Maven dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.