Is CVE-2026-6543 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-6543 being exploited in the wild.

How severe is CVE-2026-6543?

High severity, with a CVSS score of 8.8, published 30 April 2026.

Which products and versions are affected?

IBM Langflow Desktop 1.0.0 - 1.8.4.

Is there a fix for CVE-2026-6543?

No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

How is CVE-2026-6543 attacked?

It is attacked over the network, in a network appliance.

Am I affected by CVE-2026-6543?

Check whether you run IBM Langflow Desktop at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-6543: IBM Langflow Desktop code injection in code validation endpoint

CVE-2026-6543 · Severity: high · CVSS 8.8 · Published 2026-04-30

IBM Langflow Desktop, a tool used for building and testing AI workflows, contains a vulnerability that allows an attacker to run unauthorized commands on the host system. By exploiting this flaw, an authenticated user could steal sensitive information like API keys and database credentials or gain full control over the application environment. Organizations should update to version 1.9.0 immediately to prevent potential data breaches or internal network attacks.

Technologies: IBM Langflow Desktop. Vendors: IBM.

Quick answers

Is CVE-2026-6543 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-6543 being exploited in the wild.
How severe is CVE-2026-6543?: High severity, with a CVSS score of 8.8, published 30 April 2026.
Which products and versions are affected?: IBM Langflow Desktop 1.0.0 - 1.8.4.
Is there a fix for CVE-2026-6543?: No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-6543 attacked?: It is attacked over the network, in a network appliance.
Am I affected by CVE-2026-6543?: Check whether you run IBM Langflow Desktop at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

A code injection vulnerability (CWE-94) exists in the IBM Langflow Desktop code validation functionality. The '/api/v1/validate/code' endpoint utilizes Python's exec() function to process user-supplied input but fails to properly account for decorator execution during function definition parsing. An authenticated attacker can inject malicious decorators that execute immediately during the validation process. This allows for arbitrary command execution on the server with the privileges of the Langflow backend service. The vulnerability is resolved in version 1.9.0.

Affected products

IBM Langflow Desktop 1.0.0 - 1.8.4

Timeline

2026-04-28: advisory: Initial publication by IBM
2026-04-30: disclosed: CVE-2026-6543 published
2026-05-11: other: NVD initial analysis completed

References

https://www.ibm.com/support/pages/node/7271092

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