Vulnerability record · CVE-2026-59844 · published 21 July 2026

CVE-2026-59844: Libssh vulnerability

Libssh · Libssh

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.

6.5 CVSS 3.1 Medium EPSS 0.73% · top 47.8% CWE-789 · CWE-789

6.5CVSS 3.1 base score

0.73%EPSS exploitation probability, 30 days

NoNot in CISA KEV

3Affected product versions listed by NVD

6References

1 Sep 2026Last modified by NVD

Description

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

Affected products

3 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

Libssh Libssh

Enterprise Linux Redhat

Hardened Images Redhat

References

Link	Tags
https://access.redhat.com/errata/RHSA-2026:42922	Vendor Advisory
https://access.redhat.com/errata/RHSA-2026:55855
https://access.redhat.com/errata/RHSA-2026:62217
https://access.redhat.com/errata/RHSA-2026:62218
https://access.redhat.com/security/cve/CVE-2026-59844	Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2498177	Issue TrackingVendor Advisory

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Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2026-59844), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.