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Vulnerability record · CVE-2026-11393 · published 8 June 2026

CVE-2026-11393: Code injection vulnerability

Improper neutralization of triple-quote characters during Python code generation in AgentCore CLI before v0.14.2 might allow an authenticated remote threat actor to execute arbitrary code on AWS AgentCore Runtime under the imported agent's IAM execution role and on the local environment of another user in the same AWS account, via a crafted collaborationInstruction stored on a Bedrock Agent collaborator and later processed by that other user during agent import. To remediate this issue, users should upgrade to version 0.14.2.

8.8 CVSS 4.0 High EPSS 0.34% · top 75.1% CWE-94 · Code injection Awaiting Analysis
8.8CVSS 4.0 base score
0.34%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
5References
23 Jul 2026Last modified by NVD

Description

Improper neutralization of triple-quote characters during Python code generation in AgentCore CLI before v0.14.2 might allow an authenticated remote threat actor to execute arbitrary code on AWS AgentCore Runtime under the imported agent's IAM execution role and on the local environment of another user in the same AWS account, via a crafted collaborationInstruction stored on a Bedrock Agent collaborator and later processed by that other user during agent import. To remediate this issue, users should upgrade to version 0.14.2.

CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:A/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

References

LinkTags
https://aws.amazon.com/security/security-bulletins/2026-040-aws/
https://github.com/aws/agentcore-cli/releases/tag/v0.14.2
https://github.com/aws/agentcore-cli/security/advisories/GHSA-m4x6-gwgp-4pm7
https://www.npmjs.com/package/@aws/agentcore/v/0.14.2
https://www.npmjs.com/package/@aws/agentcore/v/1.0.0-preview.9

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Source: NIST National Vulnerability Database (record CVE-2026-11393), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.