Replicator 1.0.5 is vulnerable to Remote Code Execution through Insecure Deserialization

published 2026-04-01 7 mo ago modified 2026-06-17 4 mo ago also GHSA-2gmp-34j9-fqjm , EUVD-2026-17958

cvss: 6.5; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.4%; EPSS 0.4% chance of exploitation in 30 days, percentile 34%
public exploits: 0; none known

An unauthenticated remote code execution (RCE) vulnerability exists in applications that use the Replicator node package manager (npm) version 1.0.5 to deserialize untrusted user input and execute the resulting object.

Patch / fix

links 1

github.com/inikulin/replicator#19 pull request

CISA SSVC

Exploitation: Proof of concept is public
Automatable: no
Technical impact: partial
Assessed: 7 mo ago (2026-04-01)

Exploit prediction

0.40% chance of exploitation in the next 30 days, higher than 34% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CISA ADP	3.1	6.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
CNA	3.1	6.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
GitHub	3.1	6.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

Affected packages

ecosystem	package	affected	fixed in
npm	replicator	<=1.0.5	no fix listed

Affected products

Replicator Replicator

Classification

Weakness

CWE-502 Deserialization of Untrusted Data

References

Sources

CVE List CVE-2026-2265
GitHub Advisory GHSA-2gmp-34j9-fqjm
NVD CVE-2026-2265

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary