Improper input validation in Meta Platforms Llama Stack
Priority LOW 33CWE-20Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- None · Low · None
- Fix status
- Partial Red Hat: 1 without a fix
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA, GitHub and Red Hat.
Summary
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.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00504 43rd percentileScored 2026-11-07
Fix Partial Llama Stack (Meta Platforms, Inc): 0.2.20llama-stack (PyPI): 0.2.20Red Hat: 1 without a fix
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Meta Platforms | Llama Stack | 0.0.0 to before 0.2.20 | 0.2.20 | Patch available | CNA |
| — | llama-stack (PyPI) | before 0.2.20 | 0.2.20 | Patch available | GHSA-x75h-m6jj-6cj2 |
- Llama Stack VendorMeta Platforms Affected 0.0.0 to before 0.2.20 Fixed in 0.2.20 Patch available CNA
- llama-stack (PyPI) Vendor— Affected before 0.2.20 Fixed in 0.2.20 Patch available GHSA-x75h-m6jj-6cj2
Remediation
- Fix · CNA Llama Stack (Meta Platforms, Inc) Fixed in 0.2.20
- Fix · GHSA-x75h-m6jj-6cj2 llama-stack (PyPI) Fixed in 0.2.20 Advisory →
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat OpenShift AI (RHOAI) | Affected | No fix yet: Fix deferred |
Timeline
- 2026-10-02 Threatist record created from CVE-2025-55178
- 2026-10-03 Alias added: GHSA-x75h-m6jj-6cj2
References
Other 5
- https://www.facebook.com/security/advisories/cve-2025-55178
- https://github.com/llamastack/llama-stack/pull/3281
- https://github.com/llamastack/llama-stack/releases/tag/v0.2.20
- https://github.com/llamastack/llama-stack/commit/efdb5558b8dcab4d141678bfed0a405e2f312b6f
- https://github.com/llamastack/llama-stack
More Meta Platforms vulnerabilities
- TI-2025-34672 An integer overflow vulnerability in the loading of ExecuTorch models can cause… CVSS 3.1CRITICAL 9.8
- TI-2025-34671 Heap-based buffer overflow in Meta Platforms ExecuTorch CVSS 3.1CRITICAL 9.8
- TI-2025-34670 Out-of-bounds read in Meta Platforms ExecuTorch CVSS 3.1CRITICAL 9.8
- TI-2025-34669 Heap-based buffer overflow in Meta Platforms ExecuTorch CVSS 3.1CRITICAL 9.8
- TI-2025-21707 Integer overflow in Meta Platforms ExecuTorch CVSS 3.1CRITICAL 9.8
- TI-2025-21706 Integer overflow in Meta Platforms ExecuTorch CVSS 3.1CRITICAL 9.8
Sources
- CVE-2025-55178 · CVE Program
- CVE-2025-55178 · NVD
- FIRST EPSS
- GHSA-x75h-m6jj-6cj2 · GitHub Advisory Database · CC BY 4.0
- CVE-2025-55178 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences