The G/PGP (GPG) Plugin 2.0, and 2.1dev before 20060912, for Squirrelmail allows remote attackers to execute arbitrary commands via shell metacharacters in the messageSignedText parameter to the gpg_check_sign_pgp_mime function in gpg_hook_functions.php. NOTE: a parameter value can be set in the contents of an e-mail message.

Multiple directory traversal vulnerabilities in the G/PGP (GPG) Plugin 2.0, and 2.1dev before 20070614, for Squirrelmail allow remote authenticated users to include and execute arbitrary local files via a .. (dot dot) in the help parameter to (1) gpg_help.php or (2) gpg_help_base.php.

Unspecified vulnerability in the G/PGP (GPG) Plugin 2.0 for Squirrelmail 1.4.10a allows remote authenticated users to execute arbitrary commands via unspecified vectors, possibly related to the passphrase variable in the gpg_sign_attachment function, aka ZD-00000004. this information is based upon a vague advisory by a vulnerability information sales organization that does not coordinate with vendors or release actionable advisories. A CVE has been assigned for tracking purposes, but duplicates with other CVEs are difficult to determine.

Multiple unspecified vulnerabilities in the G/PGP (GPG) Plugin 2.1 for Squirrelmail allow remote attackers to execute arbitrary commands via unspecified vectors. NOTE: this information is based upon a vague pre-advisory from a reliable researcher.

Multiple unspecified vulnerabilities in the G/PGP (GPG) Plugin before 2.1 for Squirrelmail might allow "local authenticated users" to inject certain commands via unspecified vectors. NOTE: this might overlap CVE-2005-1924, CVE-2006-4169, or CVE-2007-3634.