Remote Code Execution Vulnerability in Amazon Strands Agents Tools
CVE-2026-78379

9.2CRITICAL

Key Information:

Vendor

Amazon

Status
Strands-agents-tools
Vendor
CVE Published:
25 August 2026

What is CVE-2026-78379?

The python_repl tool in Amazon Strands Agents Tools prior to version 0.8.5 suffers from improper handling of LLM prompting inputs, which may allow remote attackers to execute arbitrary Python code on the host system. This can be achieved by exploiting a bypass in the human consent gate, utilizing a crafted prompt with the non_interactive_mode keyword argument, thus compromising the integrity of the agent's host environment. To mitigate this vulnerability, it is recommended that users upgrade to version 0.8.5 or later.

Affected Version(s)

strands-agents-tools 0 < 0.8.5

References

https://pypi.org/project/strands-agents-tools/0.8.5/
patchrelease-notes
https://aws.amazon.com/security/security-bulletins/2026-0...
vendor-advisory

CVSS V4

Score:
9.2
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
Physical
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.