CVE-2026-42499 Affecting runfinch-finch package, versions <0:1.17.0-1.amzn2023.0.2


Severity

Recommended
high

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.58% (43rd 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-AMZN2023-RUNFINCHFINCH-16887006
  • published27 May 2026
  • disclosed7 May 2026

Introduced: 7 May 2026

CVE-2026-42499  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2023 runfinch-finch to version 0:1.17.0-1.amzn2023.0.2 or higher.
This issue was patched in ALAS2023-2026-1741.

NVD Description

Note: Versions mentioned in the description apply only to the upstream runfinch-finch package and not the runfinch-finch package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2023 relevant fixed versions and status.

Pathological inputs could cause DoS through consumePhrase when parsing an email address according to RFC 5322.

CVSS Base Scores

version 3.1