GHSA-3jch-9qgp-4844
CRITICALGenerated code can read and write out of bounds in safe code
Blast Radius
flatbuffersReal-time download stats are indexed for npm and PyPI packages. This vulnerability affects crates.io packages — download data is not available via public APIs for these ecosystems.
Description
Code generated by flatbuffers' compiler is unsafe but not marked as such.
See https://github.com/google/flatbuffers/issues/6627 for details.
All users that use generated code by flatbuffers compiler are recommended to:
- not expose flatbuffer generated code as part of their public APIs
- audit their code and look for any usage of
follow,push, or any method that uses them (e.g.self_follow). - Carefuly go through the crates' documentation to understand which "safe" APIs are not intended to be used.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 🦀crates.io | flatbuffers | all versions | 22.9.29 |
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for flatbuffers. 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 flatbuffers to 22.9.29 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-3jch-9qgp-4844 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-3jch-9qgp-4844 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-3jch-9qgp-4844. 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-3jch-9qgp-4844 in your dependencies?
O3 detects GHSA-3jch-9qgp-4844 across crates.io dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.