CVE-2026-89066

HIGH 7.8

OS command injection in the task synthesis component in projen

CVSS Score

7.8

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-78 CWE-88
Vendor	aws
Product	projen
Published	Sep 11, 2026
Last Updated	Sep 11, 2026

Stay Ahead of the Next One

Get instant alerts for aws projen

Be the first to know when new high vulnerabilities affecting aws projen are published — delivered to Slack, Telegram or Discord.

Get Free Alerts → Free · No credit card · 60 sec setup

CVSS v3 Breakdown

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Attack Vector

Local

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Affected Versions

AWS / projen

0 < 0.103.0

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/projen/projen/releases/tag/v0.103.0 aws.amazon.com: https://aws.amazon.com/security/security-bulletins/2026-108-aws/ github.com: https://github.com/projen/projen/security/advisories/GHSA-q6g4-h6vc-vqm8