CVE-2026-55255: Langflow Authorization Bypass Through User-Controlled Key Vulnerability

Vereiste actie (tekst van CISA, Engels)

Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.

Beschrijving (NVD, Engels)

Langflow contains an authorization bypass through user-controlled key vulnerability which allows an authenticated attacker to execute any flow belonging to another user by specifying the victim's flow ID in the request.

BRONNEN

• CISA KEVCISA Known Exploited Vulnerabilities catalog

Andere lekken bij Langflow

• CVE-2026-0770: Langflow Inclusion of Functionality from Untrusted Control Sphere Vulnerability
• CVE-2025-34291: Langflow Origin Validation Error Vulnerability
• CVE-2026-33017: Langflow Code Injection Vulnerability
• CVE-2025-3248: Langflow Missing Authentication Vulnerability

Gegevens van NVD, CISA KEV, FIRST EPSS en adviezen van leveranciers. Bijgewerkt 10 nov 2026.