CVE-2026-48520

Langflow: Unauthenticated Shareable Playground arbitrary local or S3 file read

MEDIUM
6.1
CVSS Score
Published: June 23, 2026 at 04:31 PM UTC
Updated: October 26, 2026 at 11:10 AM UTC
2 products affected across 2 vendorsLangflowLangflow

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Severity
MEDIUM6.1
Exploit prediction
EPSS 0.4%
SSVC
PoC

Description

Langflow is a tool for building and deploying AI-powered agents and workflows. Prior to 1.10.0, the "Shareable Playground" (or "Public Flows" in code) contains a potential arbitrary file-read vulnerability, depending on the exact flow configuration used. By making a flow public, public execution of the flow is allowed. The execution request can contain a list of files that gets read by Langflow and fed into the LLM. The files path can be any path supported by the storage - it can be either a local file or S3 path if supported by the local configuration This vulnerability is fixed in 1.10.0.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 1.10.0
Affected range stops below 1.10.0, so it looks safe — our inference, not a vendor statement
v < 1.10.0
Affected range stops below 1.10.0, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

References (1)

x_refsource_CONFIRMExploitVendor Advisory
Source: cverecord
https://github.com/langflow-ai/langflow/security/advisories/GHSA-rcjh-r59h-gq37

SSVC — Action Prioritization

SSVCPoCNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

6.1MEDIUMGitHub_M
Attack Vector
NETWORK
Complexity
HIGH
Privileges
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality
HIGH
Integrity
NONE
Availability
NONE
Vector?

Quick Info

StatusANALYZED
CWE
CWE-73

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