GHSA-q643-w9jp-q2qg
GHSA-q643-w9jp-q2qg is a security vulnerability in parsel. O3 Security confirms whether GHSA-q643-w9jp-q2qg is actually reachable in your code before you act, and blocks exploitation at runtime until you patch.
Hardcoded Initialization Vector in parsel
Real-World Exposure
How broadly this vulnerability is actually deployed: weekly install volume shows current usage, a proxy for how much of the ecosystem is exposed.
parselnpmDescription
All versions of parsel have a default hardcoded initialization vector. In cases where the IV is not provided, the package defaults to a hardcoded IV which renders the cipher vulnerable to chosen plaintext attacks.
Recommendation
The package is deprecated and will not be updated. Consider using an alternative package.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 📦npm | parsel | ≥ 0.0.0 | No fix |
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for parsel. 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.
Remediation status
No patched version of parsel has shipped for GHSA-q643-w9jp-q2qg yet. Where your build allows, override or pin the dependency away from the vulnerable range, and apply any maintainer-recommended mitigation.
Mitigate without a patch
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-q643-w9jp-q2qg 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-q643-w9jp-q2qg. 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-q643-w9jp-q2qg in your dependencies?
O3 detects GHSA-q643-w9jp-q2qg across npm dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.