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criticalCVSS 9.1NVD status: Analyzed

CVE-2026-21445

Langflow is a tool for building and deploying AI-powered agents and workflows.

ComponentLangflow
Severitycritical (CVSS 9.1)
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Published (NVD)2026-01-02
Last modified2026-06-17
Affected versions
langflow < 1.7.1
Fixed in1.7.1
WeaknessCWE-306
CISA KEVnot listed

NVD description

Langflow is a tool for building and deploying AI-powered agents and workflows. Prior to version 1.7.0.dev45, multiple critical API endpoints in Langflow are missing authentication controls. The issue allows any unauthenticated user to access sensitive user conversation data, transaction histories, and perform destructive operations including message deletion. This affects endpoints handling personal data and system operations that should require proper authorization. Version 1.7.0.dev45 contains a patch.

Does CVE-2026-21445 hit the version you run?Paste your docker-compose.yml, requirements.txt or package.json. The scanner checks your pinned versions against this CVE and every other one we track for Langflow.
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What to do

  • Upgrade Langflow to 1.7.1 or later.
  • Do not expose the component's API or UI to the internet without authentication in front of it.

Sources

Read more

Other Langflow CVEs

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CVE-2026-93445CVSS 8.1

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CVE-2026-103360CVSS 8.1

IBM Langflow OSS 1.0.0 through 1.12.2 could allow a remote authenticated attacker to obtain sensitive information due to improper limitation...

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CVE-2026-104334CVSS 9.8

IBM Langflow OSS 1.0.0 through 1.12.2 could allow a remote attacker to execute arbitrary code due to improper control of code generation.

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CVE-2026-93443CVSS 7.5

IBM Langflow OSS 1.0.0 through 1.12.2 could allow a remote authenticated attacker to execute arbitrary code due to improper neutralization o...

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CVE-2026-93447CVSS 7.5

IBM Langflow OSS 1.0.0 through 1.12.2 could allow an attacker with access to the server secret and Redis write access to submit a malicious...

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All Langflow CVEs