GHSA-c2jc-4fpr-4vhg
MEDIUMGHSA-c2jc-4fpr-4vhg is a medium-severity (CVSS 5.5) CWE-1333 vulnerability in @sideway/formula. O3 Security confirms whether GHSA-c2jc-4fpr-4vhg is actually reachable in your code before you act, and blocks exploitation at runtime until you patch.
@sideway/formula contains Regular Expression Denial of Service (ReDoS) Vulnerability
Blast Radius
Weekly download volume for affected packages — a proxy for how broadly this vulnerability is deployed.
@sideway/formulanpmDescription
Impact
User-provided strings to formula's parser might lead to polynomial execution time.
Patches
Users should upgrade to 3.0.1+.
Workarounds
None.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 📦npm | @sideway/formula | all versions | 3.0.1 |
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for @sideway/formula. 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 @sideway/formula to 3.0.1 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-c2jc-4fpr-4vhg 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-c2jc-4fpr-4vhg 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-c2jc-4fpr-4vhg. 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-c2jc-4fpr-4vhg in your dependencies?
O3 detects GHSA-c2jc-4fpr-4vhg across npm dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.