Attackers are exploiting a security hole in Langflow that can let outsiders take over internet-exposed servers without logging in. The flaw, CVE-2026-5027, is an unauthenticated remote-code-execution bug affecting Langflow, an open-source tool for building AI workflows; exploitation means attackers can send crafted requests to run their own commands on vulnerable systems, and the article says no patch is available yet.
Why it matters: Organizations using Langflow should treat this as urgent because an exposed server could be fully compromised with no valid account needed. If you run Langflow, restrict internet access, apply any vendor mitigations, monitor for compromise, and patch immediately once a fix is released.
Bill Toulas
2026.06.10
95% relevant
This article updates the same underlying event by adding that exploitation of CVE-2026-5027 is being observed now, describing the bug as a path traversal in the file upload endpoint, noting arbitrary file write as the immediate impact, and pointing users to the latest Langflow release 1.10.0 while referencing prior fixes in langflow-base 0.8.3 and Langflow 1.9.0.
info@thehackernews.com (The Hacker News)
2026.06.10
100% relevant
This article appears to be the initial report of active exploitation of CVE-2026-5027 in Langflow, and no existing tracked story covers this specific flaw or product.
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