Insecure file permissions expose CodeCatalyst tokens in AWS Toolkit for VS Code
Key facts
- Attack vector
- Local
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- —
- Confidentiality · integrity · availability
- High · None · None
- Fix status
- Fixed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA.
Summary
AWS Toolkit for Visual Studio Code before 4.10.0 is affected. Insecure file permissions in the CodeCatalyst connection handler let local users read world-readable token cache files (CWE-276). A local user with low privileges can obtain CodeCatalyst bearer tokens.
Written with Claude Haiku 5.5 from the sources below · 2026-10-29
Description from the CNA
Insecure file permissions in the CodeCatalyst connection handler in AWS Toolkit for VS Code before 4.10.0 allowed local users to obtain CodeCatalyst bearer tokens via reading world-readable token cache files. To mitigate this issue, users should upgrade to version 4.10.0 or later.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
Upgrade aws-toolkit-vscode to version 4.10.0 or later. The sources do not list a vendor advisory for this fix.
Written with Claude Haiku 5.5 from the sources below · 2026-10-29
- Fix · CNA aws-toolkit-vscode (aws) Fixed in 4.10.0
Timeline
- 2026-10-08 Threatist record created from CVE-2026-107332
- 2026-10-09 CISA SSVC decision points changed
- 2026-10-09 Priority changed: MEDIUM → LOW
- 2026-10-10 1 new reference · CNA
References
More AWS vulnerabilities
- 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
Sources
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences