Vulnerability Description
Email::Sender::Transport::Sendmail versions before 2.602 for Perl allow arbitrary command execution on Windows sending a message whose envelope address reaches the shell in _sendmail_pipe. On MSWin32 the envelope sender and every recipient go into a single command string, which open() passes to a shell. Every other platform gets the list form, which runs sendmail directly. When the caller supplies no envelope, Email::Sender::Simple takes the recipients from the To and Cc headers and the sender from the From header. An attacker who controls one of those header addresses runs commands as the sending process.
CVSS Score
CRITICAL
Related Weaknesses (CWE)
References
- https://github.com/rjbs/Email-Sender/commit/9a587bc9ff4edae13239190c2651da2c76b1
- https://metacpan.org/release/RJBS/Email-Sender-2.602/changes
- http://www.openwall.com/lists/oss-security/2026/09/21/8
FAQ
What is CVE-2026-93012?
CVE-2026-93012 is a vulnerability with a CVSS score of 9.8 (CRITICAL). Email::Sender::Transport::Sendmail versions before 2.602 for Perl allow arbitrary command execution on Windows sending a message whose envelope address reaches the shell in _sendmail_pipe. On MSWin32...
How severe is CVE-2026-93012?
CVE-2026-93012 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.
Is there a patch for CVE-2026-93012?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.