A deserialization issue discovered in inikulin replicator before 1.0.4 allows remote…
Priority HIGH 82CWE-502Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA and GitHub. Impact type from CWE-502.
Summary
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.
Why it matters now
Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.01715 77th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed replicator (npm): 1.0.4
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- Yes
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
| — | replicator (npm) | before 1.0.4 | 1.0.4 | Patch available | GHSA-hw46-vg6w-88fj |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
- replicator (npm) Vendor— Affected before 1.0.4 Fixed in 1.0.4 Patch available GHSA-hw46-vg6w-88fj
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:replicator_project:replicator:*:*:*:*:*:*:*:* | before 1.0.4 | Vulnerable | Replicator Project |
- cpe:2.3:a:replicator_project:replicator:*:*:*:*:*:*:*:* Versions before 1.0.4 Vulnerable ·Replicator Project
Remediation
- Fix · GHSA-hw46-vg6w-88fj replicator (npm) Fixed in 1.0.4 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2021-33420
- 2026-10-03 Alias added: GHSA-hw46-vg6w-88fj
References
Advisory 3
Sources
- CVE-2021-33420 · CVE Program
- CVE-2021-33420 · NVD
- FIRST EPSS
- GHSA-hw46-vg6w-88fj · GitHub Advisory Database · CC BY 4.0
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