CVE-2026-85012: @amazon-codecatalyst/blueprints.blueprint · OS Command Injection
Affects @amazon-codecatalyst/blueprints.blueprintSource CVE Database V5
Not known to be exploited · CVSS 8.0 High : upgrade to 0.3.156 soon.
Data as of 26 Oct 2026, 17:16 UTC
- EPSS
- 2.2% chance of exploitation in 30 days – higher than 82% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- CISA SSVC
- Exploitation
- No evidence of active exploitation and no public proof of concept
- Automatable
- Attackers cannot reliably automate steps 1–4 of the kill chain
- Technical impact
- Total control over the software or total information disclosure
CISA SSVC assessment, 2026-09-03.
- Patch
- Available – fixed in 0.3.156
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:HExploitation evidence
Disclosed: evidence found.
CVE published 3 Sep 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.
What to do
Upgrade @amazon-codecatalyst/blueprints.blueprint to 0.3.156.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| AWS@amazon-codecatalyst/blueprints.blueprint | Affected
| Fixed in
|
AI-suggested
Users of the codecatalyst-blueprints framework should upgrade to version 0.3.156 or later to eliminate the vulnerability. For users of the AWS CodeCatalyst service, no action is required because the service enforces server-side validation and isolated execution environments that prevent exploitation, even for blueprint versions prior to 0.3.156.
Description
CVE-2026-85012 is a high-severity OS command injection vulnerability in the blueprint resynthesis framework of Amazon Web Services codecatalyst-blueprints versions before 0.3.156. It allows a user with commit permissions to execute arbitrary commands via shell metacharacters in the owner field of a local merge strategy entry in a crafted .ownership-file. Version 0.3.156 and later remove shell interpretation of this field and enforce an allowlist, eliminating the injection risk. The AWS CodeCatalyst service itself applies server-side validation and isolated execution environments, so no action is required for users of the managed service.