CVE-2026-87865

When libcurl uses libssh2 with a hashed "knownhosts" file, an unrelated initial entry can cause host key validation to report a key mismatch as a missing key to the "CURLOPTSSHKEYFUNCTION" callback...

knownhost callback mismatches key as missing

When libcurl uses libssh2 with a hashed knownhosts file, an unrelated initial entry can cause host key validation to report a key mismatch as a missing key to the CURLOPTSSHKEYFUNCTION callback...

CVE-2026-87865

When libcurl uses libssh2 with a hashed knownhosts file, an unrelated initial entry can cause host key validation to report a key mismatch as a missing key to the CURLOPTSSHKEYFUNCTION callback...

PT-2026-114421

When libcurl uses libssh2 with a hashed known hosts file, an unrelated initial entry can cause host key validation to report a key mismatch as a missing key to the CURLOPT SSH KEYFUNCTION callback...

EulerOS 2.0 SP13 : curl (EulerOS-SA-2026-4129)

According to the versions of the curl packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities : 'Hello friends,', 'CVE-2026-8286: wrong STARTTLS connection reuse LOW', 'CVE-2026-8458: wrong reuse for different services LOW', 'CVE-2026-8924:...

PT-2026-87077

An improper certificate/host key validation vulnerability was discovered in the Smart Polling functionality, which established encrypted connections to target devices without validating the remote host's identity, and no option was provided to enable it. A man-in-the-middle attacker positioned...

EUVD-2026-53615

rclone is a command-line program to sync files and directories to and from different cloud storage providers. Prior to 1.75.0, the shared HTTP CONNECT helper in lib/proxy/http.go parses proxy CONNECT responses with http.ReadResponse over an unrestricted buffered reader, allowing a malicious or...

Security Bulletin: Multiple vulnerabilities impact AIX due to CURL libcurl (CVE-2026-10536, CVE-2026-11856, CVE-2026-8286, CVE-2026-8458, CVE-2026-8924, CVE-2026-8927, CVE-2026-8932, CVE-2026-9547).

Summary Multiple vulnerabilities in the curl/libcurl are related to use-after-free, reusing an invalid connection, bypass Public Suffix List checks, improper host key validation and invalid authorization. Vulnerability Details CVEID:CVE-2026-10536 DESCRIPTION: A use-after-free vulnerability exist...

OESA-2026-2985 curl security update

cURL is a computer software project providing a library libcurl and command-line tool curl for transferring data using various protocols. Security Fixes: A vulnerability exists where a new transfer that uses STARTTLS to upgrade the connection might reuse an existing live connection even though th...

Key Exchange without Entity Authentication

Overview Affected versions of this package are vulnerable to Key Exchange without Entity Authentication through contrib/paramikovendor.py in the SSH connection path. An attacker can intercept or impersonate an SSH server and have the client connect without validating the server’s host key by...

CVE-2026-9547 SSH improper host validation

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-2026-9547 SSH improper host validation

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-2026-9258

Improper validation of SSH host keys in Canon EOS Network Setting Tool Version 1.5.0 or earlier...

CVE-2026-44467

The Claude Desktop app gives you Claude Code with a graphical interface built for running multiple sessions side by side. From 1.2581.0 to before 1.4304.0, Claude Desktop's SSH remote development feature verified only whether a hostname existed in /.ssh/knownhosts without comparing the server's...

openssh security update

8.0p1-29.0.1 - Update upstream references Orabug: 36587718 8.0p1-29 - CVE-2026-35385: Fix privilege escalation via scp legacy protocol when not in preserving file mode Resolves: RHEL-164743 - CVE-2026-35388: Add connection multiplexing confirmation for proxy-mode multiplexing sessions Resolves:...

CVE-2025-13914 Apstra: SSH host key validation vulnerability for managed devices

A Key Exchange without Entity Authentication vulnerability in the SSH implementation of Juniper Networks Apstra allows a unauthenticated, MITM attacker to impersonate managed devices. Due to insufficient SSH host key validation an attacker can perform a machine-in-the-middle attack on the SSH...

CVE-2025-13914

CVE-2025-13914 concerns Juniper Networks Apstra SSH host key validation, described as a Key Exchange without Entity Authentication vulnerability. The issue enables an unauthenticated attacker to perform a man-in-the-middle attack on SSH connections from Apstra to managed devices, allowing imperso...

CVE-2025-13914

A Key Exchange without Entity Authentication vulnerability in the SSH implementation of Juniper Networks Apstra allows a unauthenticated, MITM attacker to impersonate managed devices. Due to insufficient SSH host key validation an attacker can perform a machine-in-the-middle attack on the SSH...

CVE-2025-13914 Apstra: SSH host key validation vulnerability for managed devices

A Key Exchange without Entity Authentication vulnerability in the SSH implementation of Juniper Networks Apstra allows a unauthenticated, MITM attacker to impersonate managed devices. Due to insufficient SSH host key validation an attacker can perform a machine-in-the-middle attack on the SSH...

PT-2026-31796

Name of the Vulnerable Software and Affected Versions Juniper Networks Apstra versions prior to 6.1.1 Description A Key Exchange without Entity Authentication issue exists in the SSH implementation of Juniper Networks Apstra. This allows an unauthenticated, man-in-the-middle MITM attacker to...