CVE-2026-59842

MediumCVSS 5.3/10Last modified Sep 22, 2026

Description

A flaw was found in libssh. During server-side GSSAPI key exchange, a client-supplied Curve25519 public key shorter than the expected length is copied without proper length validation, leading to an out-of-bounds heap read. This could allow a remote unauthenticated attacker to disclose small amounts of server memory.

Metrics

CVSS 3.1 5.3/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Weakness enumeration

CWE-125

Affected software

No affected versions have been published.

Timeline

Published
Jul 21, 2026
Last modified
Sep 22, 2026
NVD status
Analyzed

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CVE-2026-59842: Medium severity, CVSS 5.3 | Vulnix