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

CISA KEV is observed exploitation evidence. FIRST EPSS is a dated prediction of exploitation in the next 30 days. Missing scores are unknown. This collector requests predictions only for explicit CVE aliases in the public NuGet archive; Microsoft release views retain their existing prediction scope.

No collected risk observation for these identifiers. This does not establish absence of exploitation or a zero probability.

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.

Source published

23 Oct 2025 16:15:14 UTC

Source modified

23 Oct 2025 16:40:52 UTC

Observed here

23 Oct 2026 15:48:27 UTC

Source terms

CVE Program Terms of Use

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This view projects the publisher's source fields for reading; the original JSON retains additional fields and CVE enrichment containers. Attribution: cve-program · CVE Program Terms of Use. Source text is retained; field grouping and change labels are provided by ChangeIntel.

CVSS 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

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.

Source published

Oct 23, 2025, 4:15:14 PM (timezone not stated)

Source modified

Oct 23, 2025, 4:40:52 PM (timezone not stated)

Observed here

7 Nov 2026 03:28:17 UTC

Source terms

ENISA EUVD · source terms and attribution apply

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This view projects the publisher's source fields for reading; the original JSON retains additional fields and CVE enrichment containers. Attribution: euvd · ENISA EUVD · source terms and attribution apply. Source text is retained; field grouping and change labels are provided by ChangeIntel.

EUVD CVSS 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

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.

Source published

23 Oct 2025 17:15:40 UTC

Source modified

19 Oct 2026 16:10:00 UTC

Observed here

25 Oct 2026 03:17:29 UTC

Source terms

NIST NVD usage terms; underlying source attribution retained

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This view projects the publisher's source fields for reading; the original JSON retains additional fields and CVE enrichment containers. Attribution: nvd · NIST NVD usage terms; underlying source attribution retained. Source text is retained; field grouping and change labels are provided by ChangeIntel.

CVSS 4.0 · [email protected] · Secondary · 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

### Impact **Development mode only**. Kottster contains a pre-authentication remote code execution (RCE) vulnerability when running in development mode. The vulnerability combines two issues: 1. The `initApp` action can be called repeatedly without checking if the app is already initialized, allowing attackers to create a new root admin account and obtain a JWT token 2. The `installPackagesForDataSource` action uses unescaped command arguments, enabling command injection An attacker with access to a locally running development instance can chain these vulnerabilities to: - Reinitialize the application and receive a JWT token for a new root account - Use this token to authenticate - Execute arbitrary system commands through `installPackagesForDataSource` **Production deployments were never affected.** ### Patches Fixed in [v3.3.2](https://github.com/kottster/kottster/releases/tag/v3.3.2). Specifically, `@kottster/server` [v3.3.2](https://www.npmjs.com/package/@kottster/server/v/3.3.2) and `@kottster/cli` [v3.3.2](https://www.npmjs.com/package/@kottster/cli/v/3.3.2) address this vulnerability. We recommend developers using earlier versions of `@kottster/server` and `@kottster/cli` update all the core packages to latest release: ``` npm install @kottster/common@latest @kottster/cli@latest @kottster/server@latest @kottster/react@latest ``` ### Workarounds - Do not expose development servers to public networks or untrusted users - Use production mode for any deployment accessible from outside trusted environments ### Credit We sincerely thank Jeongwon Jo ([@P0cas](https://github.com/P0cas)) from **RedAlert** for discovering and responsibly disclosing this vulnerability.

Source published

23 Oct 2025 16:01:35 UTC

Source modified

23 Oct 2025 20:37:07 UTC

Observed here

24 Oct 2026 13:17:17 UTC

Source terms

GitHub Advisory Database · CC-BY-4.0

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This view projects the publisher's source fields for reading; the original JSON retains additional fields and CVE enrichment containers. Attribution: osv · GitHub Advisory Database · CC-BY-4.0. Source text is retained; field grouping and change labels are provided by ChangeIntel.

CVSS_V4 · 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

Publisher rating · HIGH