CVE-2026-56274

Katalog CVE

CVSS 9.9 · Critical EPSS 7,5%

Kerentanan Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') pada flowiseai flowise. Skor CVSS 3.1 9.9 (Critical) menurut vulncheck.com.

Deskripsi (NVD)

Flowise before 3.1.2 contains multiple OS command injection vulnerabilities in the Custom MCP Server feature due to incomplete command-flag validation and a regex bypass in local file access restrictions. An attacker with a Flowise account of any role, or API access with view/update permissions for chatflows, can configure a malicious MCP server to bypass the validateCommandFlags blocklist (for example, 'docker build' is not blocked, and 'npx --yes' is not blocked while only '-y' is) and the validateArgsForLocalFileAccess checks, resulting in execution of arbitrary commands on the Flowise host.

Rincian

Terbit di NVD

23 Juni 2026

Terakhir diubah

25 Juni 2026

Status NVD

Analyzed

CVSS 3.1

9.9 (Critical), sumber vulncheck.com
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

EPSS (30 hari)

7,5% peluang dieksploitasi; lebih tinggi dari 94,3% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-m99r-2hxc-cp3q exploit · advisory pihak ketiga
• https://www.vulncheck.com/advisories/flowise-remote-code-execution-via-mcp-security-bypass-in-validatecommandf... advisory pihak ketiga