CVE-2023-27582
CRITICALmaddy 0.2.0-0.6.2 - Authentication Bypass via SASL PLAIN Username
Title source: llmDescription
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.
References (4)
Core 4
Core References
Patch, Vendor Advisory x_refsource_confirm
https://github.com/foxcpp/maddy/security/advisories/GHSA-4g76-w3xw-2x6w
Patch x_refsource_misc
https://github.com/foxcpp/maddy/commit/55a91a37b71210f34f98f4d327c30308fe24399a
Patch x_refsource_misc
https://github.com/foxcpp/maddy/commit/9f58cb64b39cdc01928ec463bdb198c4c2313a9c
Release Notes x_refsource_misc
https://github.com/foxcpp/maddy/releases/tag/v0.6.3
Scores
CVSS v3
9.1
EPSS
0.0102
EPSS Percentile
58.7%
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