high CVSS 8.1

CVE-2026-9196·Python vulnerability

IBM Langflow OSS 1.0.0 through 1.10.3 could allow an authenticated attacker to execute unintended code during Agentic Assistant validation due to improper handling of LLM‑generated components. The application executes model‑generated Python code in the backend during validation prior to user approval, which may allow an attacker to trigger side effects such as outbound network access, file system interaction, or data exfiltration with the privileges of the Langflow backend process.

Severity
high
Software
Python
Fixed in
1.11.0
Published
2026-08-05

Affected versions

From: 1.0.0

Until: 1.11.0

Fixed in: 1.11.0

How to fix this CVE

Upgrade IBM Langflow OSS to version 1.11.0 or later to eliminate the code execution vulnerability in Agentic Assistant validation. The vulnerability allows authenticated users to trigger arbitrary Python code execution during the validation phase before user approval, potentially compromising backend systems and data. Immediately apply the patch and review any validation logs for suspicious activity.

sudo dnf upgrade python3-langflow || sudo pip3 install --upgrade langflow>=1.11.0

Defensia detects this vulnerability

How to check if you are affected

  1. Check installed Langflow version: pip3 show langflow | grep Version
  2. Verify vulnerability exposure: grep -r 'agentic_assistant\|validation' /path/to/langflow/config/ to confirm Agentic Assistant features are enabled
  3. Search backend logs for unauthorized code execution: grep -i 'exec\|eval\|subprocess' /var/log/langflow/*.log | grep -v '^#'
  4. Confirm patch installation: pip3 show langflow | grep Version and verify it reports 1.11.0 or higher

FAQ

What is CVE-2026-9196?

This vulnerability affects IBM Langflow OSS where the Agentic Assistant validation process executes Python code generated by language models before obtaining user approval, allowing authenticated attackers to run arbitrary code with backend process privileges.

Is CVE-2026-9196 being actively exploited?

No, this CVE is not currently listed in the CISA Known Exploited Vulnerabilities catalog and no public exploits are available, though the attack vector is network-accessible to authenticated users.

What versions of Langflow are affected by CVE-2026-9196?

IBM Langflow OSS versions 1.0.0 through 1.10.3 are vulnerable; version 1.11.0 and later contain the fix.

How do I check if my server is vulnerable to CVE-2026-9196?

Run 'pip3 show langflow | grep Version' — if the version is 1.10.3 or lower and Agentic Assistant features are enabled in your deployment, your system is vulnerable.

Does Defensia detect CVE-2026-9196?

Yes — Defensia's CVE advisory scanner compares installed package versions against the NVD database. If Langflow is installed on a monitored server, CVE-2026-9196 will appear in your dashboard with remediation steps.

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References

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