CVE-2026-93012
Publication date 21 September 2026
Last updated 24 September 2026
Ubuntu priority
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.
Status
| Package | Ubuntu Release | Status |
|---|---|---|
| libemail-sender-perl | 26.04 LTS resolute |
Needs evaluation
|
| 24.04 LTS noble |
Needs evaluation
|
|
| 22.04 LTS jammy |
Needs evaluation
|
|
| 20.04 LTS focal |
Needs evaluation
|
|
| 18.04 LTS bionic |
Needs evaluation
|
|
| 16.04 LTS xenial |
Needs evaluation
|
Severity score breakdown
CVSS version: CVSS v3.0
Base score
9.8 · Critical
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
References
Other references
- https://www.cve.org/CVERecord?id=CVE-2026-93012
- https://lists.security.metacpan.org/cve-announce/msg/43733017/
- https://github.com/rjbs/Email-Sender/commit/9a587bc9ff4edae13239190c2651da2c76b1e72c.patch
- https://metacpan.org/release/RJBS/Email-Sender-2.602/changes
- http://www.openwall.com/lists/oss-security/2026/09/21/8