Improperly Implemented Security Check for Standard Affecting amazon-cloudwatch-agent package, versions <0:1.300067.1-1.amzn2


Severity

Recommended
high

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.41% (34th percentile)

Do your applications use this vulnerable package?

In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.

Test your applications
  • Snyk IDSNYK-AMZN2-AMAZONCLOUDWATCHAGENT-17406786
  • published23 Jun 2026
  • disclosed22 May 2026

Introduced: 22 May 2026

CVE-2026-39833  (opens in a new tab)
CWE-358  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2 amazon-cloudwatch-agent to version 0:1.300067.1-1.amzn2 or higher.
This issue was patched in ALAS2-2026-3389.

NVD Description

Note: Versions mentioned in the description apply only to the upstream amazon-cloudwatch-agent package and not the amazon-cloudwatch-agent package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2 relevant fixed versions and status.

The in-memory keyring returned by NewKeyring() silently accepted keys with the ConfirmBeforeUse constraint but never enforced it. The key would sign without any confirmation prompt, with no indication to the caller that the constraint was not in effect. NewKeyring() now returns an error when unsupported constraints are requested.

CVSS Base Scores

version 3.1