MEDIUM5.3

PYSEC-2026-1571

Llama Stack could potentially allow for remote code execution

Quick fix

PYSEC-2026-1571 — llama-stack: upgrade to the fixed version with the command below.

pip install --upgrade 'llama-stack>=0.2.20'

Details

Llama Stack prior to version v0.2.20 accepted unverified parameters in the resolve_ast_by_type function which could potentially allow for remote code execution.

Are you affected?

Enter the version of the package you're using.

Affected packages

PyPI/llama-stack

Introduced in: 0Fixed in: 0.2.20

Fixpip install --upgrade 'llama-stack>=0.2.20'

References

https://nvd.nist.gov/vuln/detail/CVE-2025-55178[ADVISORY]
https://github.com/llamastack/llama-stack/pull/3281[WEB]
https://github.com/llamastack/llama-stack/commit/efdb5558b8dcab4d141678bfed0a405e2f312b6f[WEB]
https://github.com/llamastack/llama-stack[PACKAGE]
https://github.com/llamastack/llama-stack/releases/tag/v0.2.20[WEB]
https://www.facebook.com/security/advisories/cve-2025-55178[WEB]
https://pypi.org/project/llama-stack[PACKAGE]
https://github.com/advisories/GHSA-x75h-m6jj-6cj2[ADVISORY]