CVE Catalog

CVE-2026-85012

HighCVSS 8.0
Published: Updated: Translated: NVD NIST

Exploitation Probability (EPSS)

Elevated risk
1.06%

62th percentile - higher than 62% of all known CVEs

Summary

Improper neutralization of special elements in an OS command (CWE-78) in the blueprint resynthesis framework in Amazon Web Services codecatalyst-blueprints before 0.3.156 might allow a user with commit permission to execute arbitrary commands via shell metacharacters in the owner field of a [local] merge strategy entry.

Risk Assessment

A user with repository permissions could execute arbitrary commands in the resynthesis environment, potentially leading to project integrity compromise or unauthorized actions.

Recommendation

Upgrade codecatalyst-blueprints to version 0.3.156 or later, which removes shell interpretation and rejects disallowed values.

Related vulnerabilities

Original NVD description (English source)

Improper neutralization of special elements used in an OS command (CWE-78) in the blueprint resynthesis framework in Amazon Web Services codecatalyst-blueprints before 0.3.156 might allow a user with permission to commit to a repository in the project to execute arbitrary commands in the blueprint resynthesis environment via shell metacharacters in the owner field of a [local] merge strategy entry in a crafted .ownership-file. Version 0.3.156 removes shell interpretation of the owner field, running the command directly rather than through a shell, and rejects values outside an allowlisted command form. This eliminates shell metacharacter command injection. To remediate this issue, users should upgrade to version 0.3.156 or later. No action is required for use of the Amazon CodeCatalyst service. Resynthesis runs in an isolated per-project environment with scoped credentials, and the service applies server-side validation there that rejects [local] merge strategy commands outside a restricted allowlisted form, including for blueprint versions published before 0.3.156.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS