Vulnerability in Amazon CodeCatalyst connection handler (CVE-2026-107332)
Summary
Vulnerability in Amazon CodeCatalyst connection handler (CVE-2026-107332). Confidential information can be exposed externally.
Original description
The description as published by the source.
Bulletin ID: 2026-129-AWS Scope: AWS Content Type: Important (requires attention) Publication Date: 10/08/2026 10:30 PM PDT Description: AWS Toolkit for Visual Studio Code is an open source extension that lets developers work with AWS services, including Amazon CodeCatalyst, from within Visual Studio Code. We identified CVE-2026-107332, an issue in the CodeCatalyst connection handler. When a user connected to a CodeCatalyst Dev Environment, the extension cached the user's CodeCatalyst bearer token to a file with world-readable permissions and did not remove the file after the session ended. A local user or process on the same machine with access to the file system was able to read this file and obtain the bearer token. Impacted versions: < 4.10.0 Please refer to the article below for the most up-to-date and complete information related to this AWS Security Bulletin.
Source: AWS Security Bulletins NVD
Auto-generated summary
Assembled by SecPulse from the source data (CVSS, CWE, affected versions) using templates — no AI involved. Check the original description and references below for exact details.
A vulnerability tracked as CVE-2026-107332 has been found in Amazon CodeCatalyst connection handler.
Confidential information can be exposed externally. CVSS score: 5.5/10.
What to do: apply the vendor's official patched release.
If unsure, ask your IT team or search "Amazon CodeCatalyst connection handler CVE-2026-107332" on the vendor's site.
CVE-2026-107332 (Amazon CodeCatalyst connection handler) — CWE-276 / CVSS v3 5.5
Attack vector: local / no user interaction
Plan: 1) Audit SBOM/dependencies, 2) Stage→prod upgrade, 3) Add WAF/proxy monitoring on affected endpoints, 4) Hunt IOCs in logs.
Refs: see the GHSA / vendor advisory / patched release linked on this page.
A vulnerability (CWE-276) exists in Amazon CodeCatalyst connection handler.
Check the vendor advisory for the affected versions of Amazon CodeCatalyst connection handler.
Severity: Medium (CVSS 5.5/10). Confidential information can be exposed externally.
Update to the patched release per vendor advisory.
Until the patch is applied: disable the affected feature, apply WAF rules, or restrict access via network ACLs.
Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Audit SBOM/dependencies to find affected services.
Response actions
Concrete steps and command examples for SOC/SRE teams to execute in order
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1Identify exposure identify
Audit SBOM/dependencies for affected components.資産台帳・SBOM・依存マニフェストで Amazon CodeCatalyst connection handler を使っているサービスとバージョンを洗い出す。
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2Post-deployment verification verify
Confirm patched version is live in productionパッチ適用後、ステージングで PoC または同等の悪用パターンを再現して脆弱性が閉じたことを確認。本番ではアクセスログ・WAF でアラート再発が無いか継続監視。
References
- AWS aws.amazon.com
- web aws.amazon.com
- web github.com
- web github.com