What is CVE-2026-18733?

CVE-2026-18733 is a high-severity vulnerability in AWS Strands-Agents-Tools, classified under CWE-1427. CVSS score: 8.8/10. Published 2026-08-03.

How severe is CVE-2026-18733?

High severity. CVSS v3 base score is 8.8 out of 10.

Vulnerability in AWS Strands-Agents-Tools

CVE-2026-18733

A prompt injection vulnerability in the shell tool in Amazon Strands Agents Tools before 0.8.0 might allow remote actors to execute arbitrary operating system commands on the agent's host via a crafted prompt that sets the non_interactive parameter to true, bypassing the human consent gate. To remediate this issue, users should upgrade to version 0.8.0.

EPSS: 0.003 (25.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

Affected products

Aws Strands-agents-tools — versions 0

Weakness classification (CWE)

CWE-1427

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-2026-18733?: CVE-2026-18733 is a high-severity vulnerability in AWS Strands-Agents-Tools, classified under CWE-1427. CVSS score: 8.8/10. Published 2026-08-03.
How severe is CVE-2026-18733?: High severity. CVSS v3 base score is 8.8 out of 10.