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Vulnerabilities CVE-2026-59842

CVE-2026-59842

Low
Open
TLP:CLEAR

Libssh: libssh: information disclosure via short gssapi curve25519 public key

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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.

Details

CVSS Score
3.7
CVSS Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
Confidence
90%
Published
Jul 21, 2026
Last Modified
Aug 19, 2026
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