GHSA-R854-JRXH-36QX phpseclib has a variable-time HMAC comparison in SSH2::get_binary_packet() using != instead of hash_equals()

phpseclib SSH2: Variable-time comparison in HMAC verification Summary phpseclib\Net\SSH2::getbinarypacket uses PHP's != operator to compare a received SSH packet HMAC against the locally computed HMAC. != on equal-length binary strings in PHP uses memcmp, which short-circuits on the first differi...

Nutanix AHV : Multiple Vulnerabilities (NXSA-AHV-11.0.1)

The version of AHV installed on the remote host is prior to 11.0.1. It is, therefore, affected by multiple vulnerabilities as referenced in the NXSA-AHV-11.0.1 advisory. - A flaw was found in libssh when using the ChaCha20 cipher with the OpenSSL library. If an attacker manages to exhaust the hea...

MGASA-2026-0066 Updated trilead-ssh2 packages fix security vulnerabilities

CVE-2023-48795: Fixed prefix truncation breaking ssh channel integrity aka Terrapin Attack...

OESA-2026-1561 libssh security update

The ssh library was designed to be used by programmers needing a working SSH implementation by the mean of a library. The complete control of the client is made by the programmer. With libssh, you can remotely execute programs, transfer files, use a secure and transparent tunnel for your remote...

OESA-2026-1560 libssh security update

The ssh library was designed to be used by programmers needing a working SSH implementation by the mean of a library. The complete control of the client is made by the programmer. With libssh, you can remotely execute programs, transfer files, use a secure and transparent tunnel for your remote...

OESA-2026-1563 libssh security update

The ssh library was designed to be used by programmers needing a working SSH implementation by the mean of a library. The complete control of the client is made by the programmer. With libssh, you can remotely execute programs, transfer files, use a secure and transparent tunnel for your remote...

OESA-2026-1559 libssh security update

The ssh library was designed to be used by programmers needing a working SSH implementation by the mean of a library. The complete control of the client is made by the programmer. With libssh, you can remotely execute programs, transfer files, use a secure and transparent tunnel for your remote...

CLSA-2026-1773153207 curl: Fix of 2 CVEs

CVE-2025-15079: libssh global knownhosts file override - CVE-2025-14524: bearer token leak on cross-protocol redirect...

AZL-79547 CVE-2026-3731 affecting package libssh for versions less than 0.10.6-6

A weakness has been identified in libssh up to 0.11.3. The impacted element is the function sftpextensionsgetname/sftpextensionsgetdata of the file src/sftp.c of the component SFTP Extension Name Handler. Executing a manipulation of the argument idx can lead to out-of-bounds read. The attack may ...

OESA-2026-1492 libssh security update

The ssh library was designed to be used by programmers needing a working SSH implementation by the mean of a library. The complete control of the client is made by the programmer. With libssh, you can remotely execute programs, transfer files, use a secure and transparent tunnel for your remote...

[SECURITY] Fedora 42 Update: libssh-0.11.4-1.fc42

The ssh library was designed to be used by programmers needing a working SSH implementation by the mean of a library. The complete control of the client is made by the programmer. With libssh, you can remotely execute programs, trans fer files, use a secure and transparent tunnel for your remote...

Moderate: Red Hat Security Advisory: OpenShift Container Platform 4.16.56 bug fix and security update

Red Hat OpenShift Container Platform release 4.16.56 is now available with updates to packages and images that fix several bugs and add enhancements. This release includes a security update for Red Hat OpenShift Container Platform 4.16. Red Hat Product Security has rated this update as having a...

EulerOS Virtualization 2.13.1 : libssh (EulerOS-SA-2025-2624)

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, a library that implements the SSH protocol. When calculating the session ID during the key exchange KEX...

EulerOS Virtualization 2.13.0 : libssh (EulerOS-SA-2025-2584)

According to the versions of the libssh package installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities : There's a vulnerability in the libssh package where when a libssh consumer passes in an unexpectedly large input buffer to...

RLSA-2025:18286 Moderate: libssh security update

libssh is a library which implements the SSH protocol. It can be used to implement client and server applications. Security Fixes: libssh: out-of-bounds read in sftphandle CVE-2025-5318 For more details about the security issues, including the impact, a CVSS score, acknowledgments, and other...

Siemens SIMATIC S7-1500 Out-of-bounds Write (CVE-2019-3855)

An integer overflow flaw which could lead to an out of bounds write was discovered in libssh2 before 1.8.1 in the way packets are read from the server. A remote attacker who compromises a SSH server may be able to execute code on the client system when a user connects to the server. This plugin...

RLSA-2025:20943 Moderate: libssh security update

libssh is a library which implements the SSH protocol. It can be used to implement client and server applications. Security Fixes: libssh: out-of-bounds read in sftphandle CVE-2025-5318 For more details about the security issues, including the impact, a CVSS score, acknowledgments, and other...

Advisory ROSA-SA-2025-3075

Software: libssh 0.9.6 OS: ROSA Virtualization 2.1 unaffected versions = libssh-0.9.6-15.rv3 affected versions libssh-0.9.6-15.rv3 CVE-ID: CVE-2025-5318 BDU-ID: CVE-Crit: MEDIUM CVE-DESC.: A vulnerability in the sftphandle function of the LibSSH library involves reading data outside of buffer...

JLSEC-2025-97 A flaw was found in libssh versions built with OpenSSL versions older than 3.0, specifically in the...

A flaw was found in libssh versions built with OpenSSL versions older than 3.0, specifically in the sshkdf function responsible for key derivation. Due to inconsistent interpretation of return values where OpenSSL uses 0 to indicate failure and libssh uses 0 for success—the function may mistakenl...

RLSA-2025:18231 Moderate: libssh security update

libssh is a library which implements the SSH protocol. It can be used to implement client and server applications. Security Fixes: libssh: out-of-bounds read in sftphandle CVE-2025-5318 For more details about the security issues, including the impact, a CVSS score, acknowledgments, and other...