GHSA-73rg-x683-m3qw is a high-severity (CVSS 8.8) CWE-120 vulnerability in canvas. O3 Security confirms whether GHSA-73rg-x683-m3qw is actually reachable in your code before you act, and blocks exploitation at runtime until you patch.
Buffer overflow in canvas
Real-World Exposure
How broadly this vulnerability is actually deployed: weekly install volume shows current usage, and reverse-dependency count shows how many other packages break if it stays unpatched.
canvasnpmDescription
A buffer overflow is present in canvas versions before 1.6.11, which could lead to a Denial of Service or execution of arbitrary code when it processes a user-provided image.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 📦npm | canvas | all versions | 1.6.11 |
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for canvas. 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 canvas to 1.6.11 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-73rg-x683-m3qw 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-73rg-x683-m3qw 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-73rg-x683-m3qw. 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-73rg-x683-m3qw in your dependencies?
O3 detects GHSA-73rg-x683-m3qw across npm dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.