CVE-2026-59850 - Vulnerability Details - OpenCVE

A flaw was found in libssh. If data packets are processed after a channel is closed, channel data callbacks can be invoked after the associated data has already been freed, leading to crashes or possible use-after-free conditions.

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact Low

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Exploitation none

Automatable no

Technical Impact partial

Vendors	Products
Redhat	Enterprise Linux Hummingbird

No data.

No data.

No data.

References

Link	Providers
https://access.redhat.com/security/cve/CVE-2026-59850
https://bugzilla.redhat.com/show_bug.cgi?id=2498183

History

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

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}`

Tue, 21 Jul 2026 14:45:00 +0000

Type	Values Removed	Values Added
Description		A flaw was found in libssh. If data packets are processed after a channel is closed, channel data callbacks can be invoked after the associated data has already been freed, leading to crashes or possible use-after-free conditions.
Title		Libssh: libssh: use-after-free via data callbacks on closed channels
First Time appeared		Redhat Redhat enterprise Linux Redhat hummingbird
Weaknesses		CWE-416
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		https://access.redhat.com/security/cve/CVE-2026-59850 https://bugzilla.redhat.com/show_bug.cgi?id=2498183
Metrics		cvssV3_1 `{'score': 4.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L'}`

MITRE

Status: PUBLISHED

Assigner: redhat

Published: 2026-07-21T14:15:58.793Z

Updated: 2026-07-21T15:36:11.018Z

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

Link: CVE-2026-59850

Vulnrichment

Updated: 2026-07-21T14:47:57.287Z

NVD

No data.

Redhat

No data.

OpenCVE Enrichment

No data.

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