CVE-2025-65637 Affecting aws-flb-cloudwatch package, versions <1.9.4-r6


Severity

Recommended
low

Based on default assessment until relevant scores are available.

Threat Intelligence

EPSS
0.64% (48th percentile)

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  • Snyk IDSNYK-MINIMOSLATEST-AWSFLBCLOUDWATCH-14223270
  • published9 Dec 2025
  • disclosed4 Dec 2025

Introduced: 4 Dec 2025

CVE-2025-65637  (opens in a new tab)

How to fix?

Upgrade Minimos:latest aws-flb-cloudwatch to version 1.9.4-r6 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream aws-flb-cloudwatch package and not the aws-flb-cloudwatch package as distributed by Minimos. See How to fix? for Minimos:latest relevant fixed versions and status.

A denial-of-service vulnerability exists in github.com/sirupsen/logrus when using Entry.Writer() to log a single-line payload larger than 64KB without newline characters. Due to limitations in the internal bufio.Scanner, the read fails with "token too long" and the writer pipe is closed, leaving Writer() unusable and causing application unavailability (DoS). This affects versions < 1.8.3, 1.9.0, and 1.9.2. The issue is fixed in 1.8.3, 1.9.1, and 1.9.3+, where the input is chunked and the writer continues to function even if an error is logged.

CVSS Base Scores

version 3.1