Kottster app reinitialization can be re-triggered allowing command injection in development mode

published 2025-10-23 12 mo ago modified 2026-10-19 20 d ago also GHSA-j3w7-9qc3-g96p , EUVD-2025-35701

cvss: 7.2; version 4.0, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.6%; EPSS 0.6% chance of exploitation in 30 days, percentile 49%
public exploits: 0; none known

Kottster is a self hosted Node.js admin panel. From versions 3.2.0 to before 3.3.2, Kottster contains a pre-authentication remote code execution (RCE) vulnerability when running in development mode. This affects development mode only, production deployments were never affected. This issue has been fixed in version 3.3.2.

Patch / fix

fixed in 1 links 1

npm @kottster/server 3.3.2

github.com/kottster/kottster@0a7d249 commit

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: total
Assessed: 12 mo ago (2025-10-23)

Exploit prediction

0.61% chance of exploitation in the next 30 days, higher than 49% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	4.0	7.2	CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U
CNA	4.0	7.2	CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Affected packages

ecosystem	package	affected	fixed in
npm	@kottster/server	>=3.2.0, <3.3.2	3.3.2

Affected products

kottster kottster

Classification

Weakness

CWE-284 Improper Access Control
CWE-78 Improper Neutralization of Special Elements used in an OS Command

References

Sources

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