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CVE-2026-56277

CVE-2026-56277 · Flowise - Hardcoded CORS Wildcard in TTS Endpoint

This page contains facts from public vulnerability sources. Check the original advisory before updating.

Flowise before 3.1.2 sets Access-Control-Allow-Origin to a hardcoded wildcard (*) on its text-to-speech (TTS) generation endpoint (packages/server/src/controllers/text-to-speech/index.ts), independent of the server's configured CORS policy. This bypasses the server's otherwise restrictive default CORS configuration (getCorsOptions()) and allows any webpage to make cross-origin requests that trigger TTS generation using stored credentials, enabling drive-by cross-origin credential abuse.

CVSS 6.9 · Medium · EPSS 0.2% · Fix available

Published
Updated

Stack: node

Affected products and versions

  • flowise

    Versions
    • ≥ 0, < 3.1.2: Affected (semver)
    • 3.1.2: Not affected (semver)

    Update to 3.1.2

  • flowise npm

    Affected ranges
    • SEMVER: < 3.1.2

    Update to 3.1.2

Original sources

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