AWS Serverless CI/CD Sample 1.0.11 Fixes Privilege Assignment Flaw
Tech GuruQuick Answer
AWS published 2026-141-AWS for incorrect privilege assignment in versions 1.0.7 through 1.0.10 of its serverless CI/CD sample. Repository contributors could modify templates to reach resources outside the application stack. Update to 1.0.11 or later and review pipeline and account history.
Confirm Scope And Apply The Supported Remediation
What to do now: Inventory sample-derived deployments, repositories, contributors, pipeline roles, templates, stacks, and target accounts; restrict push and pipeline access; update to 1.0.11 or later; review prior changes and account activity; validate least privilege; and retain evidence.
Last verified: 2026-10-21 UTC. Recheck the authoritative advisory and supported distribution channel before changing production.
Scope And Authority
| Product scope | AWS CICD-toolchain-for-serverless-applications sample |
|---|---|
| Advisory | 2026-141-AWS |
| CVE | CVE-2026-112407 |
| Authoritative release date | 2026-10-20 20:30:00 UTC |
| Authority revision date | 2026-10-20 20:30:00 UTC |
| Affected versions | Versions 1.0.7 through 1.0.10 when an authenticated user can push to the configured source repository. |
| Fixed version | AWS CICD-toolchain-for-serverless-applications 1.0.11 or later |
| CVSS base score | Not provided by the authority |
| CVSS severity | Not provided by the authority |
| Exploitation status | Not stated by AWS; no exploitation claim is inferred. |
What Changed
AWS fixed incorrect privilege assignment in its serverless CI/CD reference implementation. A remote authenticated repository contributor could change templates to escalate privileges, access or modify resources outside the application stack, or gain unintended access within the same AWS account.
What To Validate Now
- Inventory. Identify deployments derived from the AWS sample, deployed sample version, source repositories, users and automation with push access, pipeline roles, CloudFormation permissions, target accounts, and change owners.
- Establish applicability. Treat versions 1.0.7 through 1.0.10 as affected where a user can push to the configured repository. Review forks and copied templates; do not infer applicability from a renamed repository because it can retain the affected logic.
- Remediate. Update the sample-derived deployment to version 1.0.11 or later. AWS provides no workaround; restrict repository and pipeline access until the fixed implementation is deployed.
- Validate. Confirm the resulting version and template controls, review repository and pipeline history for unexpected changes, validate least-privilege roles and stack boundaries, and document account-level findings.
- Retain evidence. Preserve asset and owner identifiers, the applicability decision, before-and-after versions, change approval, installation output, validation results, and any exception or rollback record.
Operational Cautions
AWS provides no workaround beyond deploying the fixed implementation; access restriction is an interim exposure-reduction step. Copied or renamed sample code can remain affected. AWS did not publish a CVSS score, severity, or exploitation statement.
Evidence To Retain
- Exact product, release stream, package or application version, enabled feature, environment, and accountable owner.
- UTC timestamps, authority revision, approved change record, installer or package-manager output, and resulting version.
- Relevant logs and monitoring evidence, test results, exceptions, compensating controls, and rollback decisions.
Related TechGeeks Resources
Authoritative References
Correction policy: If the authority changes affected versions, fixed versions, severity, exploitation information, mitigations, or required action, TechGeeks will update this notice and its verification date.
