Description
maddy is a composable, all-in-one mail server. Starting with version 0.2.0 and prior to version 0.6.3, maddy allows a full authentication bypass if SASL authorization username is specified when using the PLAIN authentication mechanisms. Instead of validating the specified username, it is accepted as is after checking the credentials for the authentication username. maddy 0.6.3 includes the fix for the bug. There are no known workarounds.
Scores
CVSS v3
9.1
EPSS
0.0021
EPSS Percentile
42.5%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
yes
Technical Impact
total
Details
CWE
CWE-305
CWE-287
Status
published
Products (2)
foxcpp/maddy
0.2.0 - 0.6.3Go
maddy_project/maddy
0.2.0 - 0.6.3
Published
Mar 13, 2023
Tracked Since
Feb 18, 2026