Vulnerability · Published Oct 20, 2026 · Assigned by AMZN

CVE-2026-112407Incorrect privilege assignment in AWS CICD-toolchain-for-serverless-applications

High 8.8

In plain English

A high-severity security flaw in CICD-toolchain-for-serverless-applications from AWS. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 40% of all known vulnerabilities).

Severity (CVSS 3.1)8.8High

Exploit odds (30 days)0.5%top 60.3% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

Incorrect privilege assignment in the IAM policy of AWS CICD-toolchain-for-serverless-applications 1.0.7 through 1.0.10 allows remote authenticated users with push access to the application source repository to escalate privileges and access or modify resources outside the application stack in the same AWS account via application templates deployed by the toolchain pipeline. To remediate this issue, users should upgrade existing toolchain stacks to version 1.0.11 or later.

Affected products (as reported)

Vendor	Product	Versions
AWS	CICD-toolchain-for-serverless-applications	1.0.7 – through 1.0.10

Weakness: CWE-266 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

References

https://github.com/aws-samples/aws-lambda-sample-applications/releases/tag/1.0.11 release-notes, patch
https://github.com/aws-samples/aws-lambda-sample-applications/security/advisories/GHSA-f76m-4xrx-pvq5 third-party-advisory
https://aws.amazon.com/security/security-bulletins/2026-141-aws/ vendor-advisory