GLSA-202608-17 : libssh2: Multiple Vulnerabilities

The remote host is affected by the vulnerability described in GLSA-202608-17 libssh2: Multiple Vulnerabilities Multiple vulnerabilities have been discovered in libssh2. Please review the CVE identifiers referenced below for details. Tenable has extracted the preceding description block directly...

libssh2: Multiple Vulnerabilities

Background libssh2 is a library implementing the SSH2 protocol. Description Multiple vulnerabilities have been discovered in libssh2. Please review the CVE identifiers referenced below for details. Impact Please review the referenced CVE identifiers for details. Workaround There is no known...

Unity Linux 20.1050e / 20.1060e / 20.1070e Security Update: libssh2 (UTSA-2026-102688)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-102688 advisory. libssh2 through 1.11.1, fixed in commit a13bb6c, contains a missing bounds check vulnerability that allows a malicious SSH server to trigger an arbitrary-length heap...

Unity Linux 20.1050e / 20.1060e / 20.1070e Security Update: libssh2 (UTSA-2026-102685)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-102685 advisory. libssh2 through 1.11.1, fixed in commit 5e47761, contains a double-free vulnerability in the sftpopen function in src/sftp.c that allows a malicious SSH server to...

libssh2: Fix of CVE-2026-66032

CVE-2026-66032: nullify data after free in sftpopen to prevent a double-free when sftppacketrequire fails on the FXPSTATUS/FXOK path...

Amazon Linux 2023 : libssh2, libssh2-devel (ALAS2023-2026-2056)

It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2023-2026-2056 advisory. libssh2 through 1.11.1, fixed in commit 5e47761, contains a double-free vulnerability in the sftpopen function in src/sftp.c that allows a malicious SSH server to corrupt the heap of any...

Amazon Linux 2 : libssh2, --advisory ALAS2-2026-3861 (ALAS-2026-3861)

The version of libssh2 installed on the remote host is prior to 1.4.3-12. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2-2026-3861 advisory. libssh2 through 1.11.1, fixed in commit 5e47761, contains a double-free vulnerability in the sftpopen function in...

Amazon Linux 2023 : cargo-c (ALAS2023-2026-2064)

It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2023-2026-2064 advisory. libgit2 Submodule path traversal CVE-2026-53584 Unbounded Memory Allocation via Delta Object Result-Size Header CVE-2026-53585 libgit2 version 1.9.4 and below is vulnerable to a heap...

ANT-2026-Q5A1RHS0 · libssh2/libssh2 · double_free

double-free high CVE-2026-66032 Severity Claude critical · Security research firm high · Maintainer - Discovered by Claude Mythos Preview REPORT Anthropic's analysis, sealed at approval. Disclosure to the maintainer was performed by Calif. ANT-2026-Q5A1RHS0: SFTP double-free via server-controlled...

Important: rust-cargo-c

Issue Overview: libgit2 Submodule path traversal CVE-2026-53584 Unbounded Memory Allocation via Delta Object Result-Size Header CVE-2026-53585 libgit2 version 1.9.4 and below is vulnerable to a heap out-of-bounds read in setdata in src/libgit2/transports/smartpkt.c. The vulnerable code uses a...

Important: libssh2

Issue Overview: libssh2 through 1.11.1, fixed in commit 5e47761, contains a double-free vulnerability in the sftpopen function in src/sftp.c that allows a malicious SSH server to corrupt the heap of any authenticated client opening an SFTP session. When a server responds to SSHFXPOPEN with...

Important: libssh2

Issue Overview: libssh2 through 1.11.1, fixed in commit 5e47761, contains a double-free vulnerability in the sftpopen function in src/sftp.c that allows a malicious SSH server to corrupt the heap of any authenticated client opening an SFTP session. When a server responds to SSHFXPOPEN with...

OESA-2026-3395 libssh2 security update

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. Security Fixes: libssh2 through 1.11.1 reads an attacker-controlled 32-bit attribute count fr...

OESA-2026-3394 libssh2 security update

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. Security Fixes: libssh2 through 1.11.1 reads an attacker-controlled 32-bit attribute count fr...

OESA-2026-3393 libssh2 security update

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. Security Fixes: libssh2 through 1.11.1 reads an attacker-controlled 32-bit attribute count fr...

OESA-2026-3392 libssh2 security update

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. Security Fixes: libssh2 through 1.11.1 reads an attacker-controlled 32-bit attribute count fr...

PT-2026-80517

libgit2 versions v0.27.0 through v1.9.0 built with the libssh2 SSH backend USE SSH=libssh2 contain a shell command injection vulnerability that allows remote attackers to execute arbitrary commands on an SSH server by supplying a repository path containing unescaped shell metacharacters such as...

openSUSE 16 Security Update : libssh2_org (openSUSE-SU-2026:21549-1)

The remote openSUSE 16 host has packages installed that are affected by multiple vulnerabilities as referenced in the openSUSE-SU-2026:21549-1 advisory. - CVE-2025-15661: out-of-bounds heap read vulnerability in the sftpsymlink function in src/sftp.c bsc1268546. - CVE-2026-7598: integer overflow ...

CVE-2026-5917

A flaw was found in libgit2 when built with the libssh2 SSH backend. This vulnerability allows a remote attacker to execute arbitrary commands on an SSH server. By crafting a malicious repository path containing unescaped shell metacharacters, an attacker can inject commands that are then...

Moderate: Red Hat Security Advisory: Red Hat Hardened Images RPMs Security Update

An update for Red Hat Hardened Images RPMs is now available. This update includes the following RPMs: libssh2: libssh2-1.11.1-10.4.hum1 aarch64, x8664 libssh2-devel-1.11.1-10.4.hum1 aarch64, x8664 libssh2-docs-1.11.1-10.4.hum1 noarch libssh2-1.11.1-10.4.hum1.src src Security Fixes: libssh2:...