Remote Code Execution Vulnerability in Sagredo Qmail
CVE-2026-41113

8.1HIGH

Key Information:

Vendor

Sagredo

Status
Qmail
Vendor
CVE Published:
16 April 2026

What is CVE-2026-41113?

Sagredo Qmail prior to the 2026.04.07 release contains a vulnerability that allows remote code execution via the tls_quit function. This issue arises due to improper handling of the popen function in the qmail-remote.c file, which can be exploited by attackers to execute arbitrary code on affected systems. Users are encouraged to upgrade to the latest version to mitigate this security risk.

Affected Version(s)

qmail 2024.10.26 < 2026.04.07

References

https://blog.calif.io/p/we-asked-claude-to-audit-sagredos
https://github.com/califio/publications/tree/main/MADBugs...
https://github.com/sagredo-dev/qmail/commit/749f607f6885e...

CVSS V3.1

Score:
8.1
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
High
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.