GHSA-4r4c-66gf-g9g5
MEDIUMGHSA-4r4c-66gf-g9g5 is a medium-severity (CVSS 5.3) CWE-120 vulnerability in rockhopper. O3 Security confirms whether GHSA-4r4c-66gf-g9g5 is actually reachable in your code before you act, and blocks exploitation at runtime until you patch.
rockhopper Buffer Overflow vulnerability
Blast Radius
rockhopperReal-time download stats are indexed for npm and PyPI packages. This vulnerability affects PyPI packages — download data is not available via public APIs for these ecosystems.
Description
A vulnerability, which was classified as critical, has been found in bwoodsend rockhopper up to 0.1.2. Affected by this issue is the function count_rows of the file rockhopper/src/ragged_array.c of the component Binary Parser. The manipulation of the argument raw leads to buffer overflow. Local access is required to approach this attack. Upgrading to version 0.2.0 is able to address this issue. The name of the patch is 1a15fad5e06ae693eb9b8908363d2c8ef455104e. It is recommended to upgrade the affected component. The identifier of this vulnerability is VDB-266312.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 🐍PyPI | rockhopper | all versions | 0.2.0 |
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for rockhopper. 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 rockhopper to 0.2.0 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-4r4c-66gf-g9g5 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-4r4c-66gf-g9g5 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-4r4c-66gf-g9g5. 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-4r4c-66gf-g9g5 in your dependencies?
O3 detects GHSA-4r4c-66gf-g9g5 across PyPI dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.