# CVE-2026-9198: IBM Langflow OSS remote code execution via auto-login bypass

Source: https://junglewise.ai/threats/cve-2026-9198-ibm-langflow-oss-remote-code-execution-via-auto-login-bypass  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-07-17. Updated: 2026-08-04  
License: CC BY 4.0 with a link back

CVE-2026-9198 · Severity: critical · CVSS 9.8 · Exploited in the wild · Published 2026-07-17

IBM Langflow, a visual framework for building multi-agent AI applications, contains a critical vulnerability that allows unauthorized individuals to take complete control of the server. By exploiting a flaw in how the system handles logins and code validation, an attacker can remotely execute commands without needing a username or password. This could lead to the theft of sensitive AI models, data exposure, or a total shutdown of the AI development environment.

Technologies: [IBM Langflow OSS](https://junglewise.ai/threats/technologies/langflow-oss). Vendors: [IBM](https://junglewise.ai/threats/vendors/ibm).

## Quick answers

**Is CVE-2026-9198 exploited in the wild?** Yes. CVE-2026-9198 is known to be exploited in the wild, first recorded on 4 August 2026. Treat it as urgent.

**How severe is CVE-2026-9198?** Critical severity, with a CVSS score of 9.8, published 17 July 2026.

**Which products and versions are affected?** IBM Langflow OSS 1.0.0 through 1.10.0.

**Is there a fix for CVE-2026-9198?** 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-2026-9198 attacked?** It is attacked over the network, in a network appliance.

**Am I affected by CVE-2026-9198?** Check whether you run IBM Langflow OSS 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 critical remote code execution (RCE) vulnerability exists in IBM Langflow OSS versions 1.0.0 through 1.10.0 due to an insecure API chain. An unauthenticated attacker can first call the `/api/v1/auto_login` endpoint, which incorrectly grants SUPERUSER tokens to any network requester. The attacker can then use this elevated privilege to access the `/api/v1/validate/code` endpoint, which utilizes the Python `exec()` function to process user-supplied input. This combination allows for arbitrary code execution on the underlying host. The vulnerability is present in default deployments and has been reported as exploited in the wild.

## Affected products

- IBM Langflow OSS 1.0.0 through 1.10.0

## Timeline

- 2026-07-17: disclosed: Initial report from IBM Corporation
- 2026-08-04: advisory: NVD publication date
- 2026-08-04: exploited: Reported as exploited in the wild in advisory summary

## Related threats

- [IBM Langflow OSS path traversal arbitrary file read and write](https://junglewise.ai/threats/cve-2026-97677-ibm-langflow-oss-1-0-0-through-1-12-2-an-authenticated-flow)
- [IBM Langflow OSS authentication bypass](https://junglewise.ai/threats/cve-2026-93680-ibm-langflow-oss-1-0-0-through-1-12-8-could-allow-a-remote)
- [IBM Langflow OSS denial of service via resource exhaustion](https://junglewise.ai/threats/cve-2026-90991-ibm-langflow-oss-1-0-0-through-1-12-4-could-allow-a-remote)
- [IBM Langflow OSS path traversal arbitrary file overwrite](https://junglewise.ai/threats/cve-2026-77819-ibm-langflow-oss-1-0-0-through-1-12-3-could-allow-a-remote)
- [IBM Langflow OSS improper sanitization of secrets in exports](https://junglewise.ai/threats/cve-2026-77817-ibm-langflow-oss-1-0-0-through-1-12-4-could-allow-a-remote)