SUSE SLES12 Security Update : libssh (SUSE-SU-2026:3302-1)

The remote SUSE Linux SLES12 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:3302-1 advisory. This update for libssh fixes the following issues - CVE-2026-3731: denial of service via out-of-bounds read in SFTP extension name handler...

SUSE SLES16 Security Update : libssh (SUSE-SU-2026:22956-1)

The remote SUSE Linux SLES16 / SLESSAP16 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:22956-1 advisory. - CVE-2026-15370: stack buffer overflow in SFTP server longname construction bsc1272162. - CVE-2026-59843: denial of service via...

SUSE SLED15 / SLES15 Security Update : libssh (SUSE-SU-2026:3330-1)

The remote SUSE Linux SLED15 / SLEDSAP15 / SLES15 / SLESSAP15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:3330-1 advisory. - CVE-2026-59843: denial of service via zero advertised channel packet size bsc1272164. - CVE-2026-59844: deni...

Security update for libssh

This update for libssh fixes the following issues: CVE-2026-59843: denial of service via zero advertised channel packet size bsc1272164. CVE-2026-59844: denial of service via oversized SFTP read length bsc1272165. CVE-2026-59845: denial of service via unchecked ProxyCommand fork failure bsc127216...

OPENSUSE-SU-2026:21444-1 Security update for libssh

This update for libssh fixes the following issues: - CVE-2026-15370: stack buffer overflow in SFTP server longname construction bsc1272162. - CVE-2026-59843: denial of service via zero advertised channel packet size bsc1272164. - CVE-2026-59844: denial of service via oversized SFTP read length...

SUSE CVE-2026-59845

A flaw was found in libssh. When ProxyCommand is used, an unchecked fork failure can be stored as process ID -1; during cleanup, signals may then be sent across the caller's accessible process tree, leading to local denial of service...

libssh: libssh: denial of service via unchecked ProxyCommand fork() failure

A flaw was found in libssh. When ProxyCommand is used, an unchecked fork failure can be stored as process ID -1; during cleanup, signals may then be sent across the caller's accessible process tree, leading to local denial of service...

CVE-2026-59846

A flaw was found in libssh. A malicious username expanded through %r in ProxyCommand handling can inject shell metacharacters, exposing environment variables and causing unintended shell behavior...

CVE-2026-59846

CVE-2026-59846 affects libssh: a flaw in ProxyCommand handling where a malicious username expanded via %r can inject shell metacharacters, exposing environment variables and causing unintended shell behavior. No specific exploit/public-fix details are provided in the connected documents; remediat...

EUVD-2026-46254

A flaw was found in libssh. A malicious username expanded through %r in ProxyCommand handling can inject shell metacharacters, exposing environment variables and causing unintended shell behavior...

Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')

Overview Affected versions of this package are vulnerable to Improper Neutralization of Special Elements in Output Used by a Downstream Component 'Injection' in the ProxyCommand process when a malicious username is expanded through %r, which can inject shell metacharacters, expose environment...

EUVD-2026-46178

A flaw was found in libssh. When ProxyCommand is used, an unchecked fork failure can be stored as process ID -1; during cleanup, signals may then be sent across the caller's accessible process tree, leading to local denial of service...

CVE-2026-59845

A flaw was found in libssh. When ProxyCommand is used, an unchecked fork failure can be stored as process ID -1; during cleanup, signals may then be sent across the caller's accessible process tree, leading to local denial of service...

CVE-2026-59845 Libssh: libssh: denial of service via unchecked proxycommand fork() failure

A flaw was found in libssh. When ProxyCommand is used, an unchecked fork failure can be stored as process ID -1; during cleanup, signals may then be sent across the caller's accessible process tree, leading to local denial of service...

CVE-2026-59845

A flaw was found in libssh. When ProxyCommand is used, an unchecked fork failure can be stored as process ID -1; during cleanup, signals may then be sent across the caller's accessible process tree, leading to local denial of service...

CVE-2026-59845

A flaw was found in libssh. When ProxyCommand is used, an unchecked fork failure can be stored as process ID -1; during cleanup, signals may then be sent across the caller's accessible process tree, leading to local denial of service...

Denial of Service (DoS)

Overview Affected versions of this package are vulnerable to Denial of Service DoS in the ProxyCommand process. An attacker can disrupt local system availability by triggering an unchecked fork failure, which causes signals to be sent across the process tree. This is only exploitable if the...

PT-2026-61936

Name of the Vulnerable Software and Affected Versions libssh affected versions not specified Description A flaw exists in the handling of ProxyCommand where a malicious username expanded through the %r variable can inject shell metacharacters. This can lead to the exposure of environment variable...

CVE-2026-45695 Kopia: Unauthenticated RCE via SSH ProxyCommand Injection when --insecure --without-password is used

Kopia is a cross-platform backup tool for Windows, macOS, and Linux with fast incremental backups, client-side end-to-end encryption, compression, and data deduplication. Prior to 0.23.0, Kopia's HTTP server started with --without-password accepts unauthenticated requests to /api/v1/repo/exists a...

RLSA-2025:23480 Moderate: openssh security update

OpenSSH is an SSH protocol implementation supported by a number of Linux, UNIX, and similar operating systems. It includes the core files necessary for both the OpenSSH client and server. Security Fixes: openssh: OpenSSH: Control characters in usernames can lead to code execution via ProxyCommand...