CVE-2026-59848

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CVSS 3.1

5.3 medium

EPSS

<1%p27

Published

Jul 21, 2026 (Jul 21, 2026)

Modified

Sep 1, 2026

Description

A flaw was found in libssh. A malicious SFTP server can send responses for unknown request IDs that libssh clients keep queued indefinitely, causing unbounded memory growth and client-side denial of service.

Vendors: libssh redhat
Products: libssh, hardened images, enterprise linux
Weakness: CWE-770
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

NVD CVE.org GitHub PoCs EPSS (0.3%)

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