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.

Project Subscriptions

Vendors Products
Enterprise Linux Subscribe
Hummingbird Subscribe
Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.


Workaround

No workaround available.

History

Tue, 21 Jul 2026 16:30:00 +0000

Type Values Removed Values Added
CPEs cpe:/o:redhat:enterprise_linux:7

Tue, 21 Jul 2026 16:00:00 +0000

Type Values Removed Values Added
CPEs cpe:/o:redhat:enterprise_linux:7

Tue, 21 Jul 2026 15:30:00 +0000

Type Values Removed Values Added
CPEs cpe:/o:redhat:enterprise_linux:7
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Tue, 21 Jul 2026 12:15:00 +0000

Type Values Removed Values Added
Description 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.
Title Libssh: libssh: denial of service via oversized sftp read length
First Time appeared Redhat
Redhat enterprise Linux
Redhat hummingbird
Weaknesses CWE-789
CPEs cpe:/a:redhat:hummingbird:1
cpe:/o:redhat:enterprise_linux:10
cpe:/o:redhat:enterprise_linux:8
cpe:/o:redhat:enterprise_linux:9
Vendors & Products Redhat
Redhat enterprise Linux
Redhat hummingbird
References
Metrics cvssV3_1

{'score': 6.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'}


Projects

Sign in to view the affected projects.

cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published:

Updated: 2026-07-21T16:17:34.383Z

Reserved: 2026-07-07T15:40:24.561Z

Link: CVE-2026-59844

cve-icon Vulnrichment

Updated: 2026-07-21T13:11:26.320Z

cve-icon NVD

No data.

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses