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.
Published: 2026-07-21
Score: 6.5 Medium
EPSS: n/a
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

Vendor Workaround

No workaround available.

Tracking

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Advisories

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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'}


Subscriptions

Redhat Enterprise Linux Hummingbird
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