CVE-2026-119978

LOWCVSS 9.0 · CRITICAL

Signal is active with 1 mentions in latest observed window

Immediate actions

  • Track advisory updates for patch or workaround availability

Recommended action window: Monitor and triage in normal cycle

NVD description

Flowise through 3.1.4 contains a sandbox escape vulnerability that allows authenticated users to execute OS commands by abusing allowlisted langchain and mammoth modules when ALLOW_BUILTIN_DEP=true. Attackers can submit JavaScript to /api/v1/node-custom-function that writes a file into the mammoth package via LocalFileStore and requires it, escaping vm2 as the Flowise process user.

0.0/ 10 priority

Sources & remediation

Weakness type (CWE)
CWE-749

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

NONE

Momentum

NONE

Threat summary

  • 1 mentions across 1 observed day

What's happening

  • 1 total mentions across 1 day

Deep dive

Activity timeline1 mentions / 1d
00111Mentions · 2026-10-30: 110-30
Referenced assets1 URL
Full discourse1 post
  • cve.now@cvedotnow

    🔴 FlowiseAI Flowise: remote code execution in custom function sandbox (CVE-2026-119978) An authenticated user can run arbitrary commands on the server, potentially taking full control of the host. No patch listed yet https://cve.now/CVE-2026-119978?utm_source=x&utm_medium=social&utm_campaign=cvedotnow&utm_content=critical

    00000669
    18.1K followersView on X

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