Which versions of Langflow are affected by EUVD-2026-16662?

CVE-2026-5022 presents moderate security risk, a missing authorization vulnerability rated CVSS 6.3. Attackers could gain access beyond their authorized level.

Langflow EUVD-2026-16662

Q: What is the CVSS score of EUVD-2026-16662?

EUVD-2026-16662 has a CVSS 4.0 base score of 6.3 (Medium). CVSS vector: CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X. EPSS exploitation probability: 0.0%.

| CVE-2026-5022 MEDIUM

Missing Authorization (CWE-862)

2026-03-27 tenable

GHSA-jvx2-jcjj-x36h

Authentication Bypass Langflow

6.3

CVSS 4.0 · NVD

Severity by source

NVD PRIMARY

6.3 MEDIUM

CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Attack Vector

Network

Attack Complexity

High

Privileges Required

None

User Interaction

None

Scope

Lifecycle Timeline

EUVD ID Assigned

Mar 27, 2026 - 14:45 euvd

EUVD-2026-16662

Analysis Generated

Mar 27, 2026 - 14:45 vuln.today

CVE Published

Mar 27, 2026 - 14:34 nvd

MEDIUM 6.3

DescriptionCVE.org

The '/api/v1/files/images/{flow_id}/{file_name}' endpoint does not enforce any authentication or authorization checks, allowing any unauthenticated user to download images belonging to any flow by knowing (or guessing) the flow ID and file name.

AnalysisAI

{flow_id}/{file_name}' endpoint lacks authentication and authorization enforcement, permitting unauthenticated users to download arbitrary images associated with any flow by supplying or enumerating flow IDs and file names. This authentication bypass affects all versions of Langflow AI's langflow product and enables unauthorized disclosure of potentially sensitive image assets. …

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Vulnerability AssessmentAI

Risk Assessment	Despite the absence of a CVSS score and vector, this vulnerability presents moderate to high real-world risk based on available signals. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario	An attacker discovers or obtains a Langflow deployment URL and begins enumerating the image endpoint with common or sequential flow IDs (e.g., 1, 2, 3, or known project names). For each flow ID, the attacker iterates through predictable file names (e.g., 'diagram.png', 'output_0.jpg', 'training_data.png') and receives unguarded access to download image assets. …
Remediation	Immediately review Tenable's advisory at https://www.tenable.com/security/research/tra-2026-23 for available patch guidance and apply any vendor-released updates to Langflow. … Detailed patch versions, workarounds, and compensating controls in full report.

Recommended ActionAI

Within 30 days: Identify affected systems and apply vendor patches as part of regular patch cycle. …

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EUVD-2026-16662 vulnerability details – vuln.today

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