Information Exposure Affecting runfinch-finch package, versions <0:1.17.2-1.amzn2023.0.3


Severity

Recommended
high

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.38% (31st percentile)

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  • Snyk IDSNYK-AMZN2023-RUNFINCHFINCH-18531993
  • published5 Aug 2026
  • disclosed8 Jul 2026

Introduced: 8 Jul 2026

NewCVE-2026-42505  (opens in a new tab)
CWE-201  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2023 runfinch-finch to version 0:1.17.2-1.amzn2023.0.3 or higher.
This issue was patched in ALAS2023-2026-2023.

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.

Handshakes which used Encrypted Client Hello could be de-anonymized by a passive network observer due to a disclosure of pre-shared key identities in the unencrypted client hello.

CVSS Base Scores

version 3.1