UBUNTU-CVE-2026-59846

A flaw was found in libssh. A malicious username expanded through %r in ProxyCommand handling can inject shell metacharacters, exposing environment variables and causing unintended shell behavior...

JLSEC-2026-656 Deno: Command Injection via spawnSync & spawn on Windows

Summary Deno's node:childprocess implementation provided an escapeShellArg helper used when callers passed shell: true to spawn / spawnSync / exec and friends. On Windows, the helper failed to quote arguments that contained cmd.exe metacharacters such as &, |, , ^, !, , , and did not neutralize %...

PYSEC-2026-2066 yt-dlp: `--exec` command injection when using `%q` in yt-dlp on Windows (Bypass of CVE-2023-40581)

Summary The patch that addressed CVE-2023-40581 attempted to prevent RCE when using --exec with %q by replacing double quotes with two double quotes. However, this escaping is not sufficient, and still allows expansion of environment variables. Support for output template expansion in --exec, alo...

Deno: Command Injection via spawnSync & spawn on Windows

Summary Deno's node:childprocess implementation provided an escapeShellArg helper used when callers passed shell: true to spawn / spawnSync / exec and friends. On Windows, the helper failed to quote arguments that contained cmd.exe metacharacters such as &, |, , ^, !, , , and did not neutralize %...

PT-2026-50146

Name of the Vulnerable Software and Affected Versions Deno versions prior to 2.7.10 Description In the node:child process implementation on Windows, the escapeShellArg helper function fails to properly quote arguments containing cmd.exe metacharacters such as &, |, , ^, !, , and and does not...

SUSE CVE-2026-35386

In OpenSSH before 10.3, command execution can occur via shell metacharacters in a username within a command line. This requires a scenario where the username on the command line is untrusted, and also requires a non-default configurations of % in sshconfig...

PT-2026-29833

Name of the Vulnerable Software and Affected Versions OpenSSH versions prior to 10.3 Description OpenSSH versions before 10.3 may allow command execution through shell metacharacters present in a username specified within a command line. This requires an untrusted username on the command line and...