Intel

CVE-2026-85012

Die unsachgemäße Neutralisierung spezieller Elemente in einem Betriebssystembefehl (CWE-78) im Blueprint-Resynthese-Framework von Amazon …

highEPSS 2.3%

Description

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.

Source: NVD (NIST)cvelistv5

Metrics

XIEM Effective CVSS
8.5
Source: cna-v4
EPSS percentile
82.5 %
Critical — this CVE ranks in the top fifth of all CVEs scored today (rank ≥ 80%).
KEV status
—
Show all metrics
Severity
high
Priority score
125.53
Exploit maturity
no public PoC known
CVSS v3
8.0
CVSS v4
8.5
EPSS score
2.3 %
Moderate — model estimates 1-10% exploitation likelihood.
Published
2026-09-03 17:08 UTC
CWE
CWE-78

Weakness classes (CWE)

  • CWE-78Base

    Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

    The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component.

    cwe.mitre.org →

References & sources

Reanalysis & status changes

Chronological NVD audit events for this CVE — reanalyses, CVSS updates, CPE diffs.

  1. New CVE Received2026-09-03 18:17 UTC· ff89ba41-3aa1-4d27-914a-91399e9639e5
    • Description: 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.
    • CVSS V4.0: AV:N/AC:L/AT:N/PR:L/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/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:X/V:X/RE:X/U:X
    • CVSS V3.1: AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
    • CWE: CWE-78
  2. CVE Modified2026-09-03 18:17 UTC· 134c704f-9b21-4f2e-91b3-4a467353bcc0
    • SSVC: {"id":"CVE-2026-85012","role":"CISA Coordinator","options":[{"exploitation":"none"},{"automatable":"no"},{"technicalI…