CVE-2026-0965

Libssh: libssh: denial of service via improper configuration file handling

Severity Score

3.3

*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

Track

*SSVC

Descriptions

A flaw was found in libssh where it can attempt to open arbitrary files during configuration parsing. A local attacker can exploit this by providing a malicious configuration file or when the system is misconfigured. This vulnerability could lead to a Denial of Service (DoS) by causing the system to try and access dangerous files, such as block devices or large system files, which can disrupt normal operations.

Se encontró una falla en libssh donde puede intentar abrir archivos arbitrarios durante el análisis de la configuración. Un atacante local puede explotar esto al proporcionar un archivo de configuración malicioso o cuando el sistema está mal configurado. Esta vulnerabilidad podría llevar a una denegación de servicio (DoS) al hacer que el sistema intente acceder a archivos peligrosos, como dispositivos de bloque o archivos de sistema grandes, lo que puede interrumpir las operaciones normales.

*Credits: Red Hat would like to thank Jakub Jelen (libssh) and Kang Yang for reporting this issue.

CVSS Scores

Red Hatv3 3.3

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

Low

* Common Vulnerability Scoring System

SSVC

Decision:Track

Exploitation

None

Automatable

Tech. Impact

Partial

* Organization's Worst-case Scenario

Timeline

2026-01-14 CVE Reserved
2026-03-26 CVE Published
2026-04-27 EPSS Updated
2026-05-12 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-73: External Control of File Name or Path

CAPEC

References (2)

URL	Tag	Source
https://access.redhat.com/security/cve/CVE-2026-0965	Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2436980	Issue Tracking

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Libssh Search vendor "Libssh"		Libssh Search vendor "Libssh" for product "Libssh"				<= 0.11.3 Search vendor "Libssh" for product "Libssh" and version " <= 0.11.3"		-		Affected
Redhat Search vendor "Redhat"		Enterprise Linux Search vendor "Redhat" for product "Enterprise Linux"				9.0 Search vendor "Redhat" for product "Enterprise Linux" and version "9.0"		-		Affected
Redhat Search vendor "Redhat"		Enterprise Linux Search vendor "Redhat" for product "Enterprise Linux"				10.0 Search vendor "Redhat" for product "Enterprise Linux" and version "10.0"		-		Affected