Description
Overly permissive file permissions in AWS CLI before 1.44.78 (v1) and 2.34.29 (v2) on Unix-like systems where the umask has not been configured to restrict file permissions (the default on most systems) may allow other local users on the same host to read credentials written by certain CLI subcommands (aws codeartifact login, aws iam create-virtual-mfa-device, aws deploy register).
To remediate this issue, users should upgrade to AWS CLI 1.44.78 (v1) or 2.34.29 (v2) or later.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| AWS | AWS CLI | ≤ 1.44.77, ≤ 2.34.28 | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2023 | awscli-2 | 2.36.47-4.amzn2023.0.1 | ALAS2023-2026-3133 |
| Amazon Linux 2 | awscli | 1.18.147-1.amzn2.0.4 | ALAS2-2026-4052, ALAS2-2026-3966 |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| PyPI | awscli | < 1.44.78 | 1.44.78 | GHSA-wfp6-f47h-hxc3 |
Advisories 3
- ALAS2023-2026-3133 Moderate: awscli-2 security update (Amazon Linux 2023) Amazon Linux Security Center (ALAS) · Nov 5, 2026
- ALAS2-2026-4052 Moderate: awscli security update (Amazon Linux 2) Amazon Linux Security Center (ALAS) · Nov 2, 2026
- ALAS2-2026-3966 Moderate: awscli security update (Amazon Linux 2) Amazon Linux Security Center (ALAS) · Oct 12, 2026