Read the docs
TI-2026-78164 Aliases CVE-2026-112407

Incorrect IAM privilege assignment in AWS serverless CI/CD toolchain

Priority MEDIUM 40CWE-266Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Privilege escalation
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-266.

Summary

AWS CICD-toolchain-for-serverless-applications versions 1.0.7 through 1.0.10 assign incorrect privileges in their IAM policy (CWE-266). A remote authenticated user with push access to the application source repository can escalate privileges and access or modify resources outside the application stack in the same AWS account through application templates deployed by the toolchain pipeline.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

Description from the CNA

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00455 39th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
AWSCICD-toolchain-for-serverless-applications1.0.7 – 1.0.10—No fix listedCNA
  • CICD-toolchain-for-serverless-applications VendorAWS Affected 1.0.7 – 1.0.10 Fixed in — No fix listed CNA

Remediation

Upgrade existing toolchain stacks to version 1.0.11 or later.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

Timeline

  1. 2026-10-21 Threatist record created from CVE-2026-112407
  2. 2026-10-22 Priority changed: MEDIUM → LOW
  3. 2026-10-28 CISA SSVC decision points changed
  4. 2026-10-28 Priority changed: LOW → MEDIUM

References

Patch 1

Advisory 2

  • TI-2026-23989 crypto: algif_aead - Revert to operating out-of-place KEVCVSS 3.1HIGH 7.8
  • TI-2023-23979 The HTTP/2 protocol allows a denial of service (server resource consumption) because… KEVCVSS 3.1HIGH 7.5
  • TI-2024-18648 Amazon AWS Amplify CLI before 12.10.1 incorrectly configures the role trust policy of IAM… CVSS 3.1CRITICAL 9.8
  • TI-2024-05929 Openssh: regresshion - race condition in ssh allows rce/dos CVSS 3.1HIGH 8.1
  • TI-2025-03847 Input validation issue in AWS Amplify Studio UI component properties CVSS 4.0CRITICAL 9.0
  • TI-2026-11603 HTTP/2 Stream Parser Confusion Body-Inspection Bypass in Amazon CloudFront with AWS WAF CVSS 4.0HIGH 7.9
See all 383 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences