CVE-2026-9547

When a libcurl-based application performs transfers via SCP:// or SFTP:// and utilizes the CURLOPTSSHKEYFUNCTION callback, it may silently accept an untrusted server. This vulnerability occurs when a server presents a host key type that does not match the specific key type already recorded for th...

EUVD-2026-41495

When a libcurl-based application performs transfers via SCP:// or SFTP:// and utilizes the CURLOPTSSHKEYFUNCTION callback, it may silently accept an untrusted server. This vulnerability occurs when a server presents a host key type that does not match the specific key type already recorded for th...

CVE-2026-12064

CVE-2026-12064 describes an issue in curl where using a schemeless URL with --proto-default for SFTP/SCP causes the tool layer to skip SSH security configuration (notably CURLOPT_SSH_HOST_PUBLIC_KEY_SHA256 and CURLOPT_SSH_KNOWNHOSTS ). The libcurl runtime honors the default protocol and proceeds ...

Linux Distros Unpatched Vulnerability : CVE-2026-54886

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - Loop with Unreachable Exit Condition 'Infinite Loop' vulnerability in Erlang OTP ssh sshsftpd module allows an authenticated SFTP user to render an SFTP channel...

UBUNTU-CVE-2026-54886

Loop with Unreachable Exit Condition 'Infinite Loop' vulnerability in Erlang OTP ssh sshsftpd module allows an authenticated SFTP user to render an SFTP channel permanently unresponsive. The handledata/4 function in sshsftpd contains a catch-all clause that accepts channel data of any type. When...

UBUNTU-CVE-2026-53422

Observable Response Discrepancy vulnerability in Erlang OTP ssh sshsftpd module allows an authenticated SFTP user to enumerate the existence of files and directories outside the configured root directory. The SSHFXPREALPATH handler in sshsftpd calls relatefilename/3 with Canonicalize=false, unlik...

EUVD-2026-41413

Loop with Unreachable Exit Condition 'Infinite Loop' vulnerability in Erlang OTP ssh sshsftpd module allows an authenticated SFTP user to render an SFTP channel permanently unresponsive. The handledata/4 function in sshsftpd contains a catch-all clause that accepts channel data of any type. When...

CVE-2026-54886

Loop with Unreachable Exit Condition 'Infinite Loop' vulnerability in Erlang OTP ssh sshsftpd module allows an authenticated SFTP user to render an SFTP channel permanently unresponsive. The handledata/4 function in sshsftpd contains a catch-all clause that accepts channel data of any type. When...

CVE-2026-54886

The vulnerability CVE-2026-54886 affects Erlang/OTP's SSH server side (ssh_sftpd) and allows an authenticated SFTP client to trigger an infinite loop on a channel by sending SSH_MSG_CHANNEL_EXTENDED_DATA. The handle_data/4 clause tail-calls itself when a non-zero data_type_code arrives with an em...

EEF-CVE-2026-54886 SSH SFTP server denial of service via extended channel data infinite loop

Summary Loop with Unreachable Exit Condition 'Infinite Loop' vulnerability in Erlang OTP ssh ssh\sftpd module allows an authenticated SFTP user to render an SFTP channel permanently unresponsive. The handle\data/4 function in ssh\sftpd contains a catch-all clause that accepts channel data of any...

EUVD-2026-41410

Observable Response Discrepancy vulnerability in Erlang OTP ssh sshsftpd module allows an authenticated SFTP user to enumerate the existence of files and directories outside the configured root directory. The SSHFXPREALPATH handler in sshsftpd calls relatefilename/3 with Canonicalize=false, unlik...

CVE-2026-53422

CVE-2026-53422 describes an observable response discrepancy in Erlang/OTP ssh_sftpd where the REALPATH handling bypasses the root check, enabling an authenticated SFTP user to determine the existence of files/directories outside the configured root. The uncanonicalized path can trigger resolve_sy...

EEF-CVE-2026-53422 SFTP REALPATH path-existence oracle allowing filesystem enumeration outside configured root

Summary Observable Response Discrepancy vulnerability in Erlang OTP ssh ssh\sftpd module allows an authenticated SFTP user to enumerate the existence of files and directories outside the configured root directory. The SSH\FXP\REALPATH handler in ssh\sftpd calls relate\file\name/3 with...

USN-8486-1: libssh2 vulnerabilities

It was discovered that libssh2 incorrectly handled the sftpsymlink function. A malicious SSH server or machine-in-the-middle attacker could possibly use this issue to obtain sensitive information or cause a denial of service. CVE-2025-15661 It was discovered that libssh2 had a pre-authentication...

USN-8486-1 libssh2 vulnerabilities

It was discovered that libssh2 incorrectly handled the sftpsymlink function. A malicious SSH server or machine-in-the-middle attacker could possibly use this issue to obtain sensitive information or cause a denial of service. CVE-2025-15661 It was discovered that libssh2 had a pre-authentication...

Curl 7.81.0 < 8.21.0 Proto-Default Skips SSH Verification

The version of curl installed on the remote host is 7.81.0 prior to 8.21.0. It is, therefore, affected by an improper host validation vulnerability: - When a user invokes curl using a schemeless URL combined with --proto-default sftp, a disconnect occurs that erroneously bypasses the initializati...

Astra Linux – Vulnerability in curl

When performing SSH-based transfers using either SCP or SFTP, and setting the knownhosts file, libcurl may still mistakenly accept connections to hosts that are not present in the specified file, if those hosts are added as recognized in the libssh global knownhosts file...

UBUNTU-CVE-2026-12064

When a user invokes curl using a schemeless URL combined with --proto-default sftp or scp, a disconnect occurs between the tool layer and libcurl. The tool layer incorrectly infers the URL scheme, which erroneously bypasses the initialization of critical SSH security options like...

UBUNTU-CVE-2026-9547

When a libcurl-based application performs transfers via SCP:// or SFTP:// and utilizes the CURLOPTSSHKEYFUNCTION callback, it may silently accept an untrusted server. This vulnerability occurs when a server presents a host key type that does not match the specific key type already recorded for th...

OESA-2026-2704 erlang security update

Erlang is a general-purpose programming language and runtime environment. Erlang has built-in support for concurrency, distribution and fault tolerance. Erlang is used in several large telecommunication systems from Ericsson. Security Fixes: Relative Path Traversal, Improper Isolation or...