CVE-2026-89066

OS command injection in the task synthesis component in projen

Published: Sep 11, 2026Updated: Sep 11, 2026 Sources: CVE List NVDCWE-78

7.8HIGH

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.

No summary for this CVE yet.

CVSS Vector Breakdown

Exploitability

AV:LAttack Vector

Local

AC:LAttack Complexity

Low

PR:NPrivileges Required

None

UI:RUser Interaction

Required

Scope

S:UScope

Unchanged

Impact

C:HConfidentiality

High

I:HIntegrity

High

A:HAvailability

High

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Weaknesses

CWE-78 CWE-88

Affected Products

AWS

commercial·US

projenMixed

Cloud & SaaS / cloud-platform

Exploitability

No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.

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Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

1 technique

Execution

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References

https://github.com/projen/projen/releases/tag/v0.103.0

github.com

https://aws.amazon.com/security/security-bulletins/2026-108-aws/

aws.amazon.com

https://github.com/projen/projen/security/advisories/GHSA-q6g4-h6vc-vqm8

github.com

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