replicator vulnerable to Deserialization of Untrusted DataGHSA-hw46-vg6w-88fj
CRITICALFix: inikulin/replicator#17GHSA-hw46-vg6w-88fj is a critical-severity (CVSS 9.8) Deserialization of Untrusted Data vulnerability in replicator. 1 public exploit or proof-of-concept reference is indexed, so weaponization risk is real. A fix is available for replicator — see the affected versions and patch details below.
Exploitation Status
Proof-of-concept exploit code exists
- CISA’s SSVC triage found public proof-of-concept exploit code for this CVE, though no confirmed active exploitation.
- CISA assesses this as automatable — exploitation doesn’t require manual, per-target effort, which raises the odds of mass scanning and opportunistic attacks.
- A successful exploit gives an attacker total control of the affected component, not partial access.
Exploitation and automatability from CISA’s SSVC triage for GHSA-hw46-vg6w-88fj.
EPSS Exploitation Probability
Probability of exploitation in the next 30 days, from FIRST.org EPSS.
How urgent is this, really
Where this sits among everything scored
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.
replicatornpmDescription
A deserialization issue discovered in inikulin replicator before 1.0.4 allows remote attackers to run arbitrary code via the fromSerializable function in TypedArray object.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 📦npm | replicator | all versions | 1.0.4npm install replicator@1.0.4 |
Affected Products
replicatorreplicator_projectResearch use only. For defensive security, authorized penetration testing, and academic research only. Never execute exploit code against systems without explicit written authorization.
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for replicator, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update replicator to 1.0.4 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-hw46-vg6w-88fj is resolved across your whole dependency graph.
Workarounds
Do not deserialise data from untrusted sources: where the format allows it, restrict deserialisation to an explicit allowlist of expected types, and prefer a data-only format (JSON, Protobuf) over one that can reconstruct arbitrary objects until you can upgrade.
Frequently Asked Questions
Is GHSA-hw46-vg6w-88fj in your dependencies?
Find it across npm, including transitive dependencies.