Improper Enforcement of Message Integrity During Transmission in a Communication Channel Affecting rclone package, versions <0:1.74.2-80.amzn2023


Severity

Recommended
high

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.2% (11th percentile)

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  • Snyk IDSNYK-AMZN2023-RCLONE-17288900
  • published10 Jun 2026
  • disclosed22 May 2026

Introduced: 22 May 2026

CVE-2026-39827  (opens in a new tab)
CWE-924  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2023 rclone to version 0:1.74.2-80.amzn2023 or higher.
This issue was patched in ALAS2023-2026-1810.

NVD Description

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

An authenticated SSH client that repeatedly opened channels which were rejected by the server caused unbounded memory growth, eventually crashing the server process and affecting all connected users. Rejected channels are now properly removed from the connection's internal state and released for garbage collection.

CVSS Base Scores

version 3.1