cvedb.io
CVE-2026-40193
HIGH · CVSS 8.2
EPSS exploitation probability: 0%
Published 2026-04-16T00:16:28.163 · Last modified 2026-06-17T10:44:51.037

Summary

maddy is a composable, all-in-one mail server. Versions prior to 0.9.3 contain an LDAP injection vulnerability in the auth.ldap module where user-supplied usernames are interpolated into LDAP search filters and DN strings via strings.ReplaceAll() without any LDAP filter escaping, despite the go-ldap/ldap/v3 library's ldap.EscapeFilter() function being available in the same import. This affects three code paths: the Lookup() filter, the AuthPlain() DN template, and the AuthPlain() filter. An attacker with network access to the SMTP submission or IMAP interface can inject arbitrary LDAP filter expressions through the username field in AUTH PLAIN or LOGIN commands. This enables identity spoofing by manipulating filter results to authenticate as another user, LDAP directory enumeration via wil

Affected products

maddy_project — maddy

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References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.