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2026-07-05·LANGFLOW·security risk
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A wave of security advisories disclosed critical vulnerabilities in Langflow, an open-source tool for building AI...

A wave of security advisories disclosed critical vulnerabilities in Langflow, an open-source tool for building AI agents.

window 30devidence 21confidence score 100

confidence score

Strong evidence: 2 independent source classes support this read.

100
medium confidence2 independent source classesotherpasses publish gate

signal brief

A wave of security advisories disclosed critical vulnerabilities in Langflow, an open-source tool for building AI agents. The disclosures, published between June 16-29, 2026, include remote code execution (RCE), path traversal, insecure direct object references (IDOR), denial of service (DoS), and session management flaws. Notably, several vulnerabilities (e.g., CVE-2026-48519, CVE-2026-55447) allow unauthenticated RCE or arbitrary file reads, posing severe risks to hosted instances. The vulnerabilities affect versions prior to 1.9.2, 1.10.0, and others; the latest development release (1.11.0.dev32) likely includes fixes but is not yet stable. These security issues undermine developer trust and may slow adoption, especially in enterprise environments where security is paramount.

What the sources said:

  • OSV advisory GHSA-v5ff-9q35-q26f states: "Shareable Playground ... contains a critical RCE vulnerability ... allows for providing arbitrary custom Python code as the nodes code."
  • OSV advisory GHSA-9c59-2mvc-vfr8 says: "Langflow's /api/v1/monitor router exposes 7 endpoints ... without verifying that the authenticated requester owns the targeted resource."
  • OSV advisory GHSA-x223-p2gf-v735 notes: "Unauthenticated users can upload any amount of data ... leading to space exhaustion ... and information leak."

source data used

Decision support, not stock advice. This signal is research with cited evidence — not a recommendation to buy, sell, or hold any security.