CVE-2025-55178: Meta Platforms, Inc Llama Stack

Medium severity, CVSS 5.3. EPSS: 0.5% chance of exploitation in the next 30 days.

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.

Affected products

• Meta Platforms, Inc Llama Stack: from 0.0.0, before 0.2.20 (fixed in 0.2.20)

Published 2025-09-24. Last modified 2026-06-17.