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2026-07-12·LANGFLOW·security risk
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Langflow, an open-source platform for building AI agents and workflows, has suffered a cascade of security...

Langflow, an open-source platform for building AI agents and workflows, has suffered a cascade of security vulnerabilities in June-July 2026, including multiple Remote Code Execution (RCE), Insecure Direct Object Reference (IDOR), path traversal, and denial-of-service flaws.

window 10devidence 27confidence score 100

confidence score

Strong evidence: 3 independent source classes support this read.

100
high confidence3 independent source classesofficialotherpasses publish gate

signal brief

Langflow, an open-source platform for building AI agents and workflows, has suffered a cascade of security vulnerabilities in June-July 2026, including multiple Remote Code Execution (RCE), Insecure Direct Object Reference (IDOR), path traversal, and denial-of-service flaws. The most severe allow unauthenticated attackers to execute arbitrary code on Langflow servers. CISA added CVE-2026-55255, an authorization bypass, to its Known Exploited Vulnerabilities catalog on July 7, 2026, requiring federal agencies to remediate by July 10, 2026. Additional advisories from OSV and GitHub detail RCE in Shareable Playgrounds (CVE-2026-48519), unauthenticated file read (CVE-2026-48520), IDOR in Monitor API (CVE-2026-33760), session logout failure (CVE-2026-55423), and more. The breadth and severity of these issues erode trust in Langflow for production use. Developers and enterprises using Langflow must urgently patch to versions 1.10.0 or later, or consider alternative orchestration tools. The CISA mandate signals heightened government scrutiny and potential customer churn.

What the sources said:

  • CISA KEV entry: "Langflow contains an authorization bypass through user-controlled key vulnerability which allows an authenticated attacker to execute any flow belonging to another user..."
  • GHSA-v5ff-9q35-q26f: "Prior to 1.9.2, the 'Shareable Playground' contains a critical RCE vulnerability... executing any public flow with arbitrary custom Python code."
  • GHSA-rcjh-r59h-gq37: "Prior to 1.10.0, the 'Shareable Playground' contains a potential arbitrary file-read vulnerability... files path can be any path supported by the storage."
  • GHSA-9c59-2mvc-vfr8: "Langflow's /api/v1/monitor router exposes 7 endpoints that perform read, write, and delete operations... without verifying that the authenticated requester owns the targeted resource."

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.