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CVE-2026-55255

Langflow Authorization Bypass Through User-Controlled Key Vulnerability.

Langflow · Langflow

Exploitabilité (EPSS)
0.9 %
percentile mondial 59
Sévérité (CVSS)
·
non noté
Ajoutée au KEV
07 juil. 2026
échéance CISA · 10 juil. 2026
Description

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.

Action requise (CISA)

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.

Familles de faiblesses
CWE-639 · CWE-639
Signal de priorisation (d’inspiration SSVC)
Examiner
Exploitation
Active (catalogue KEV)
Automatisable
Inconnu
Impact technique
Inconnu

Une orientation, pas une décision : le 4ᵉ facteur SSVC (impact mission/société) dépend du contexte de votre organisation. Méthode ↗

Autres vulnérabilités exploitées · Langflow
CVE-2025-3248 100% CVE-2026-33017 96% CVE-2025-34291 93% CVE-2026-0770 63%
NVD ↗ CVE.org ↗ CISA KEV ↗