GHSA-w6cq-9cf4-gqpg
MEDIUMRabbitMQ vulnerable to Denial of Service by publishing large messages over the HTTP API
Blast Radius
rabbit_common💧rabbit_commonReal-time download stats are indexed for npm and PyPI packages. This vulnerability affects Hex packages — download data is not available via public APIs for these ecosystems.
Description
Summary
Responsibly disclosed by @NSEcho.
HTTP API did not enforce an HTTP request body limit, making it vulnerable for DoS attacks with very large messages.
Details
An authenticated user with sufficient credentials can publish a very large messages over the HTTP API and cause target node to be terminated by an "out-of-memory killer"-like mechanism.
A PoC was provided to Team RabbitMQ privately.
Impact
Denial of Service
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 💧Hex | rabbit_common | ≥ 3.12.0&&< 3.12.7 | 3.12.7 |
| 💧Hex | rabbit_common | ≥ 3.11.0&&< 3.11.24 | 3.11.24 |
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for rabbit_common. 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 rabbit_common to 3.12.7 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-w6cq-9cf4-gqpg 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-w6cq-9cf4-gqpg 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-w6cq-9cf4-gqpg. 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-w6cq-9cf4-gqpg in your dependencies?
O3 detects GHSA-w6cq-9cf4-gqpg across Hex dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.