What is CVE-2026-40193?

CVE-2026-40193 is a high-severity vulnerability in Foxcpp Maddy, classified under LDAP Injection. CVSS score: 8.2/10. Published 2026-04-15.

How severe is CVE-2026-40193?

High severity. CVSS v3 base score is 8.2 out of 10.

LDAP Injection in Foxcpp Maddy

CVE-2026-40193

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.Repla…

EPSS: 0.001 (17.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N.

Affected products

Foxcpp Maddy — versions < 0.9.3

Weakness classification (CWE)

CWE-90 — LDAP Injection

References

https://github.com/foxcpp/maddy/security/advisories/GHSA-5835-4gvc-32pc (x_refsource_CONFIRM)
https://github.com/foxcpp/maddy/commit/6a06337eb41fa87a35697366bcb71c3c962c44ba (x_refsource_MISC)
https://github.com/foxcpp/maddy/releases/tag/v0.9.3 (x_refsource_MISC)

Frequently asked questions

What is CVE-2026-40193?: CVE-2026-40193 is a high-severity vulnerability in Foxcpp Maddy, classified under LDAP Injection. CVSS score: 8.2/10. Published 2026-04-15.
How severe is CVE-2026-40193?: High severity. CVSS v3 base score is 8.2 out of 10.