CVE-2026-59844 MEDIUM

CVE-2026-59844: Libssh: libssh: denial of service via oversized sftp read length

Vendor Red Hat
Product Red Hat Enterprise Linux 10
Weakness CWE-789
Published July 21, 2026
Last update July 21, 2026
View on NVD All CVEs

CVSS base score

6.5/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality None
Integrity None

CVSS vector

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

What the vulnerability does

01Description

A flaw was found in libssh. A remote authenticated client can issue SSH_FXP_READ requests with an arbitrarily large length, causing a libssh SFTP server to allocate excessive memory and potentially exhaust it through repeated requests.

Key dates

02Disclosure timeline

July 21, 2026 CVE published
July 21, 2026 Record updated