CVE-2026-56862 Affecting crane package, versions <0.21.9-r1


Severity

Recommended
low

Based on default assessment until relevant scores are available.

Threat Intelligence

EPSS
0.48% (40th percentile)

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  • Snyk IDSNYK-CHAINGUARDLATEST-CRANE-18825106
  • published15 Aug 2026
  • disclosed13 Aug 2026

Introduced: 13 Aug 2026

NewCVE-2026-56862  (opens in a new tab)

How to fix?

Upgrade Chainguard crane to version 0.21.9-r1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream crane package and not the crane package as distributed by Chainguard. See How to fix? for Chainguard relevant fixed versions and status.

Handshake messages, such as KeyUpdate, are always considered as state-advancing, regardless of whether a handshake has been completed or not. As a result, a malicious client can keep sending KeyUpdate messages to force the server to keep performing key derivation operations indefinitely.

CVSS Base Scores

version 3.1