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CVE-2026-89066 Details

Description

Improper neutralization of special elements used in an OS command in the task synthesis component in projen before 0.103.0 might allow context-dependent attackers to execute arbitrary commands on a developer workstation or continuous integration runner via shell metacharacters in project configuration values and repository file names that are interpolated into generated task definitions. To remediate this issue, users should upgrade to version 0.103.0 and then re-synthesize the project so that .projen/tasks.json is regenerated with the corrected task definitions. Upgrading alone is not sufficient because the generated task definition file is committed to the repository.

Metrics

CVSS 3.x Severity and Vector Strings:

CNA: AMZNCVSS-B:7.8 HIGHVector:CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://aws.amazon.com/security/security-bulletins/2026-108-aws/	AMZN
https://github.com/projen/projen/releases/tag/v0.103.0	AMZN
https://github.com/projen/projen/security/advisories/GHSA-q6g4-h6vc-vqm8	AMZN

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-78	Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')	AMZN
CWE-88	Improper Neutralization of Argument Delimiters in a Command ('Argument Injection')	AMZN

Affected Products

No affected product data is available for this CVE.

Change History

3 change records found show changes

Date	Action	Recorded By
Sep 11, 2026	CVE Modified	AMZN
Sep 11, 2026	CVE Modified	CISA-ADP
Sep 11, 2026	New CVE Received	AMZN