What is CVE-2026-16796?

CVE-2026-16796 is a high-severity vulnerability in AWS Bedrock-Agentcore 1.18.1, classified under Argument Injection. CVSS score: 7.3/10. Published 2026-07-23.

How severe is CVE-2026-16796?

High severity. CVSS v3 base score is 7.3 out of 10.

Vulnerability in AWS Bedrock-Agentcore 1.18.1

CVE-2026-16796

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.

EPSS: 0.006 (47.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.3 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N.

Affected products

Aws Bedrock-agentcore 1.18.1 — versions 0

Weakness classification (CWE)

CWE-88 — Argument Injection

References

ff89ba41-3aa1-4d27-914a-91399e9639e5 (release-notes, patch)
ff89ba41-3aa1-4d27-914a-91399e9639e5 (vendor-advisory)
ff89ba41-3aa1-4d27-914a-91399e9639e5 (release-notes)

Frequently asked questions

What is CVE-2026-16796?: CVE-2026-16796 is a high-severity vulnerability in AWS Bedrock-Agentcore 1.18.1, classified under Argument Injection. CVSS score: 7.3/10. Published 2026-07-23.
How severe is CVE-2026-16796?: High severity. CVSS v3 base score is 7.3 out of 10.