CVE-2026-48110

CVE-2026-48110 affects Russh, a Rust SSH client/server library. From 0.34.0 up to before 0.61.0, several client/server message handlers decoded attacker-controlled SSH strings, name-lists, and byte fields into owned allocations before applying field-specific bounds. A remote SSH peer could send o...

CVE-2026-46673 Russh: Unchecked CryptoVec allocation and growth handling is reachable from local agent inputs in current russh releases and from remote SSH traffic in historical pre-0.58.0 releases

Russh is a Rust SSH client & server library. Prior to version 0.60.3, CryptoVec used unchecked capacity growth, unchecked length arithmetic, and unsafe allocation/locking paths. In current russh releases, local SSH agent peers could still feed attacker-controlled frame lengths into buffer growth...

libssh security update

An update is available for libssh. This update affects Rocky Linux 10. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability from the CVE list libssh is a library which implements the SSH protocol. It can be used to...

RLSA-2026:18683 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: Double Free Vulnerability in libssh Key Export Functions CVE-2025-5351 libssh: Use of uninitialized variable in privatekeyfromfile CVE-2025-4878 libssh: Write...

Invoking bypass of certificate restrictions in golang.org/x/crypto/ssh

...

Invoking infinite loop on large channel writes in golang.org/x/crypto/ssh

...

Invoking server panic during CheckHostKey/Authenticate in golang.org/x/crypto/ssh

...

Uncaught Exception

Overview golang.org/x/crypto/ssh is a SSH client and server Affected versions of this package are vulnerable to Uncaught Exception in the CertChecker component when used as a public key callback without setting IsUserAuthority or IsHostAuthority. An attacker can cause the server to panic by...

AZL-87765 CVE-2026-39827 affecting package gh for versions less than 2.62.0-17

An authenticated SSH client that repeatedly opened channels which were rejected by the server caused unbounded memory growth, eventually crashing the server process and affecting all connected users. Rejected channels are now properly removed from the connection's internal state and released for...

CVE-2026-42508 Invoking auth bypass via unenforced @revoked status in golang.org/x/crypto/ssh/knownhosts

Previously, a revoked 'SignatureKey' belonging to a CA was not correctly checked for revocation. Now, both the 'key' and 'key.SignatureKey' are checked for @revoked...

CVE-2026-46595

The golang.org/x/crypto/ssh library is affected by an authorization bypass vulnerability. If an SSH server configuration uses a callback other than a public key , the system fails to perform source-address validation . This issue was previously addressed in CVE-2024-45337 but persists in specific...

CVE-2026-39830 Invoking client can cause server deadlock on unexpected responses in golang.org/x/crypto/ssh

A malicious SSH peer could send unsolicited global request responses to fill an internal buffer, blocking the connection's read loop. The blocked goroutine could not be released by calling Close, resulting in a resource leak per connection. Unsolicited global responses are now discarded...

GO-2026-5023 Invoking VerifiedPublicKeyCallback permissions skip enforcement in golang.org/x/crypto/ssh

Previously, CVE-2024-45337 fixed an authorization bypass for misused ssh server configurations; if any other type of callback is passed other than public key, then the source-address validation would be skipped...

LibSSH SFTP DoS

The vulnerability of the SFTP component in the LibSSH authentication library lies in the escape of the operation beyond the buffer in memory. Exploiting this vulnerability could allow a malicious actor to cause service failures remotely...

CLSA-2026-1778490111 libssh: Fix of CVE-2026-0966

CVE-2026-0966: fix heap buffer underflow in sshgethexa on NULL or zero-length input, remotely reachable via GSSAPI authentication logging...

CVE-2026-7598

A flaw was found in the libssh2 library. A remote attacker can exploit an integer overflow vulnerability in the userauthpassword function by manipulating the usernamelen or passwordlen arguments and cause a heap-based buffer overflow. This leads to a crash to the application linked to the library...

Libssh2 Heap Buffer Overflow DoS

The vulnerability of the libssh2ntohu32 function in the SSH2 protocol implementation library Libssh2 is related to reading data beyond the allowable buffer size. Exploiting this vulnerability could allow a remote attacker to cause service interruptions...

EUVD-2026-26722

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 of the patch is...

CLSA-2026-1777445542 libssh2: Fix of 2 CVEs

CVE-2019-3858: fix zero-byte allocation in sftppacketread - CVE-2019-3859: fix out-of-bounds reads in libssh2packetrequire...

UBUNTU-CVE-2026-40194

phpseclib is a PHP secure communications library. Starting in 0.1.1 and prior to 3.0.51, 2.0.53, and 1.0.28, 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,...