CVE-2026-16796 PUBLISHED

Improper neutralization of argument delimiters in AWS Bedrock AgentCore Python SDK install_packages()

Assigner: AMZN
Reserved: 23.07.2026 Published: 23.07.2026 Updated: 24.07.2026

Improper neutralization of argument delimiters in the install_packages() method in AWS Bedrock AgentCore Python SDK before 1.18.1 might allow a remote authenticated user to execute arbitrary commands within the Code Interpreter sandbox via crafted package name arguments.

To mitigate this issue, users should upgrade to the patched version 1.18.1.

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N
CVSS Score: 7.3

Attack Vector	Network	Scope	Unchanged
Attack Complexity	Low	Confidentiality Impact	High
Privileges Required	Low	Integrity Impact	High
User Interaction	Required	Availability Impact	None

CVSS 3.1

CVSS Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
CVSS Score: 8.4

Exploitability Metrics		Vulnerable System Impact Metrics		Subsequent System Impact Metrics
Attack Vector	Network	Confidentiality	High	Confidentiality	None
Attack Complexity	Low	Integrity	High	Integrity	None
Attack Requirements	None	Availability	None	Availability	None
Privileges Required	Low
User Interaction	Active

CVSS 4.0

Product Status

Vendor	AWS
Product	bedrock-agentcore 1.18.1
Versions	Default: unaffected affected from 0 to 1.18.1 (excl.)

Credits

BeyondTrust Phantom Labs finder

References

Problem Types

CWE-88 Improper neutralization of argument delimiters in a command ('argument injection') CWE

Impacts

CAPEC-88 OS Command Injection