The vulnerability of the libssh library, related to improper checking of the return value of functions, allows a hacker to cause a service failure.

The vulnerability of the libssh library is related to improper checking of the return value of a function. Exploiting this vulnerability could allow an attacker, operating remotely, to cause service failures...

The vulnerability of the libssh library, related to the use of memory after it is freed, allows a hacker to execute arbitrary code.

The vulnerability of the libssh library lies in the repeated release of previously released memory. Exploiting this vulnerability allows a remote attacker to execute arbitrary code...

The vulnerability of the libssh library, related to uncontrolled memory allocation, allows a hacker to cause a service failure.

The vulnerability of the libssh library is related to uncontrolled memory allocation. Exploiting this vulnerability could allow a remote attacker to cause a service failure...

The vulnerability of the libssh library, related to executing a loop with an unreachable exit condition, allows a hacker to cause a service failure.

The vulnerability of the libssh library lies in the execution of a loop with an unreachable exit condition. Exploiting this vulnerability could allow a malicious actor to cause a service failure...

The vulnerability of the libssh library, related to deficiencies in authentication mechanisms, allows attackers to gain unauthorized access to protected information.

The vulnerability of the libssh library is related to deficiencies in the authentication process. Exploiting this vulnerability could allow an attacker, operating remotely, to gain unauthorized access to protected information...

The vulnerability of the libssh library, related to the lack of measures taken to clean data at the management level, allows a perpetrator to execute arbitrary commands.

The vulnerability of the libssh library is related to the lack of measures taken to clean data at the administrative level. Exploiting this vulnerability could allow an attacker to execute arbitrary commands...

The vulnerability of the libssh library, related to unlimited resource distribution, allows a hacker to cause a service failure.

The vulnerability of the libssh library is related to the unlimited distribution of resources. Exploiting this vulnerability could allow a malicious actor to cause service failures remotely...

MGASA-2026-0425 Updated libssh packages fix security vulnerabilities

Stack buffer overflow in SFTP server longname construction. CVE-2026-15370 Denial of service via zero advertised channel packet size. CVE-2026-59843 Denial of service via oversized SFTP read length. CVE-2026-59844 Denial of service via unchecked ProxyCommand fork failure. CVE-2026-59845 Informati...

Updated libssh packages fix security vulnerabilities

Stack buffer overflow in SFTP server longname construction. CVE-2026-15370 Denial of service via zero advertised channel packet size. CVE-2026-59843 Denial of service via oversized SFTP read length. CVE-2026-59844 Denial of service via unchecked ProxyCommand fork failure. CVE-2026-59845 Informati...

EulerOS Virtualization 2.11.0 : libssh (EulerOS-SA-2026-3520)

According to the versions of the libssh package installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities : A flaw was found in libssh versions built with OpenSSL versions older than 3.0, specifically in the sshkdf function responsible for...

EulerOS Virtualization 2.11.1 : libssh (EulerOS-SA-2026-3433)

According to the versions of the libssh package installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities : A flaw was found in libssh versions built with OpenSSL versions older than 3.0, specifically in the sshkdf function responsible for...

Astra Linux – Vulnerability in libssh

A flaw was discovered in libssh versions built with OpenSSL versions older than 3.0. The issue lies with the sshkdf function, which is responsible for key derivation. Due to inconsistent interpretation of return values, OpenSSL uses 0 to indicate failure, while libssh uses 0 for success. As a...

Astra Linux – Vulnerability in libssh

A vulnerability has been identified in libssh up to version 0.11.3. The affected element is the function sftpextensionsgetname/sftpextensionsgetdata in the file src/sftp.c of the SFTP Extension Name Handler component. Performing operations on the argument idx can lead to out-of-bounds read...

Astra Linux – Vulnerability in curl

When performing SSH-based transfers using either SCP or SFTP, and setting the knownhosts file, libcurl may still mistakenly accept connections to hosts that are not present in the specified file, if those hosts are added as recognized in the libssh global knownhosts file...

Astra Linux – Vulnerability in libssh

A flaw was discovered in the libssh API function sshscpnew, in versions prior to 0.9.3 and prior to 0.8.8. When the libssh SCP client connects to a server, the scp command, which includes a path provided by the user, is executed on the server side. If the library is used in a way that allows user...

Astra Linux – Vulnerability in libssh

In libssh 0.9.4, there is a NULL pointer dereferencing in tftpserver.c if sshbuffernew returns NULL...

Astra Linux – Vulnerability in libssh

A flaw was discovered in libssh. By using the ProxyCommand or ProxyJump feature, users can exploit unvalidated hostname syntax on the client side. This issue may allow an attacker to inject malicious code into the commands related to these features via the hostname parameter...

Astra Linux – Vulnerability in libssh

A flaw was discovered in the abstract layer of the libssh library responsible for message digest MD operations, which is implemented by different supported crypto backends. The return values from these operations were not properly checked, which could lead to low-memory situations, NULL...

Astra Linux – Vulnerability in libssh

A NULL pointer dereference was detected in libssh during re-keying with algorithm guessing. This issue may allow an authenticated client to cause a denial of service...

K000163271: libssh vulnerabilities CVE-2026-59849 and CVE-2026-59851

Security Advisory Description CVE-2026-59849 A flaw was found in libssh. Logic errors in automatic certificate-based public key authentication can cause libssh clients to loop indefinitely when configured certificates are missing or repeatedly rejected by a server, leading to denial of service...