Weakness
sagredo qmail before 2026.04.07 allows tls_quit remote code execution because of popen in notlshosts_auto in qmail-remote.c.
References
- https://blog.calif.io/p/we-asked-claude-to-audit-sagredos
- https://github.com/califio/publications/tree/main/MADBugs/qmail
- https://github.com/sagredo-dev/qmail/commit/749f607f6885e3d01b36f2647d7a1db88f1ef741
- https://github.com/sagredo-dev/qmail/pull/42
- https://github.com/sagredo-dev/qmail/releases/tag/v2026.04.07
- http://www.openwall.com/lists/oss-security/2026/04/18/5
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