Quick answers
- Is CVE-2026-37003 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-37003 being exploited in the wild.
- How severe is CVE-2026-37003?
- Critical severity, with a CVSS score of 9.8, published 27 August 2026.
- Which products and versions are affected?
- Agno up to and including 2.5.8.
- Is there a fix for CVE-2026-37003?
- 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-2026-37003 attacked?
- It is attacked over the network.
- Am I affected by CVE-2026-37003?
- Check whether you run Agno 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
The vulnerability is a prompt injection attack affecting Agno's PythonTools and ShellTools components. These tools accept LLM-generated arguments without sanitization and pass them directly to dangerous execution sinks including Python's exec(), runpy.run_path(), and subprocess.run(). An unauthenticated attacker can exploit this by injecting malicious instructions into content (such as web pages or documents) that the Agno agent processes, achieving arbitrary Python code execution and OS command execution on the host server. No authentication is required, and the attack is triggered through normal agent operation. Patches for this critical vulnerability should be available or forthcoming.
Affected products
- Agno Agno up to and including 2.5.8
Timeline
- 2026-08-27: disclosed: Published on NVD