1055 matches found
CVE-2026-55199 libssh2 - Pre-Authentication DoS via SSH_MSG_EXT_INFO Handler
libssh2 through 1.11.1, fixed in commit 1762685, contains a pre-authentication denial of service vulnerability in the SSHMSGEXTINFO handler in src/packet.c that allows a malicious SSH server to cause a client CPU exhaustion loop by sending a crafted extension count value. A malicious server can s...
CVE-2026-55199
libssh2 through 1.11.1, fixed in commit 1762685, contains a pre-authentication denial of service vulnerability in the SSHMSGEXTINFO handler in src/packet.c that allows a malicious SSH server to cause a client CPU exhaustion loop by sending a crafted extension count value. A malicious server can s...
EUVD-2026-37782
libssh2 through 1.11.1, fixed in commit 1762685, contains a pre-authentication denial of service vulnerability in the SSHMSGEXTINFO handler in src/packet.c that allows a malicious SSH server to cause a client CPU exhaustion loop by sending a crafted extension count value. A malicious server can s...
CVE-2026-55199 libssh2 - Pre-Authentication DoS via SSH_MSG_EXT_INFO Handler
libssh2 through 1.11.1, fixed in commit 1762685, contains a pre-authentication denial of service vulnerability in the SSHMSGEXTINFO handler in src/packet.c that allows a malicious SSH server to cause a client CPU exhaustion loop by sending a crafted extension count value. A malicious server can s...
Photon OS 5.0: Libssh2 PHSA-2026-5.0-0857
An update of the libssh2 package has been released. %NASLMINLEVEL 80900 C Tenable, Inc. The descriptive text and package checks in this plugin were extracted from VMware Security Advisory PHSA-2026-5.0-0857. The text itself is copyright C VMware, Inc. include'compat.inc'; if description...
PT-2026-50527
Name of the Vulnerable Software and Affected Versions libssh2 versions prior to 1.11.1 Description A pre-authentication denial of service issue exists in the SSH MSG EXT INFO handler within src/packet.c. A malicious SSH server can trigger a CPU exhaustion loop on the client by sending a crafted...
PT-2026-50528
Name of the Vulnerable Software and Affected Versions libssh2 versions prior to 1.11.2 Description An out-of-bounds write issue exists in the ssh2 transport read function due to an integer overflow and a failure to enforce upper bounds on the packet length field. A remote attacker operating a...
GHSA-JHP3-H4HP-2C3P vulnerabilities
Vulnerabilities for packages: libssh2...
CVE-2026-7598 vulnerabilities
Vulnerabilities for packages: libssh2...
GHSA-JHP3-H4HP-2C3P vulnerabilities
Vulnerabilities for packages: libssh2...
CVE-2026-7598 vulnerabilities
Vulnerabilities for packages: libssh2...
Amazon Linux 2023 : libssh2, libssh2-devel (ALAS2023-2026-1779)
It is, therefore, affected by a vulnerability as referenced in the ALAS2023-2026-1779 advisory. A security vulnerability has been detected in libssh2 up to 1.11.1. The impacted element is the function userauthpassword of the file src/userauth.c. Such manipulation of the argument...
Medium: libssh2
Issue Overview: A security vulnerability has been detected in libssh2 up to 1.11.1. The impacted element is the function userauthpassword of the file src/userauth.c. Such manipulation of the argument usernamelen/passwordlen leads to integer overflow. The attack may be launched remotely. The name ...
Medium: libssh2
Issue Overview: A security vulnerability has been detected in libssh2 up to 1.11.1. The impacted element is the function userauthpassword of the file src/userauth.c. Such manipulation of the argument usernamelen/passwordlen leads to integer overflow. The attack may be launched remotely. The name ...
Amazon Linux 2 : libssh2, --advisory ALAS2-2026-3329 (ALAS-2026-3329)
The version of libssh2 installed on the remote host is prior to 1.4.3-12. It is, therefore, affected by a vulnerability as referenced in the ALAS2-2026-3329 advisory. A security vulnerability has been detected in libssh2 up to 1.11.1. The impacted element is the function userauthpassword of the...
[SECURITY] Fedora 43 Update: libssh2-1.11.1-6.fc43
libssh2 is a library implementing the SSH2 protocol as defined by Internet Drafts: SECSH-TRANS22, SECSH-USERAUTH25, SECSH-CONNECTION23, SECSH-ARCH20, SECSH-FILEXFER06, SECSH-DHGEX04, and SECSH-NUMBERS10...
Fedora 43 : libssh2 (2026-1b9134cdc9)
The remote Fedora 43 host has a package installed that is affected by a vulnerability as referenced in the FEDORA-2026-1b9134cdc9 advisory. This update addresses CVE-2026-7598, a potential heap buffer overflow, which could be triggered remotely by supplying very long username and/or password...
[SECURITY] Fedora 44 Update: libssh2-1.11.1-6.fc44
libssh2 is a library implementing the SSH2 protocol as defined by Internet Drafts: SECSH-TRANS22, SECSH-USERAUTH25, SECSH-CONNECTION23, SECSH-ARCH20, SECSH-FILEXFER06, SECSH-DHGEX04, and SECSH-NUMBERS10...
Fedora 44 : libssh2 (2026-f87ac8187c)
The remote Fedora 44 host has a package installed that is affected by a vulnerability as referenced in the FEDORA-2026-f87ac8187c advisory. This update addresses CVE-2026-7598, a potential heap buffer overflow, which could be triggered remotely by supplying very long username and/or password...
