EUVD-2026-24256
Improper Access Control (CWE-284)
2026-04-21
GitHub_M
6.0
CVSS 4.0
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CVSS VectorNVD
CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Attack Vector
Network
Attack Complexity
High
Privileges Required
Low
User Interaction
None
Scope
X
Lifecycle Timeline
2
Patch available
Apr 21, 2026 - 21:02 EUVD
CVSS changed
Apr 21, 2026 - 20:22 NVD
6.0 (MEDIUM)
DescriptionNVD
mailcow: dockerized is an open source groupware/email suite based on docker. In versions prior to 2026-03b, no administrator verification takes place when deleting Forwarding Hosts with /api/v1/delete/fwdhost. Any authenticated user can call this API. Checks are only applied for edit/add actions, but deletion can still significantly disrupt the mail service. Version 2026-03b fixes the vulnerability.
Analysis
mailcow: dockerized is an open source groupware/email suite based on docker. In versions prior to 2026-03b, no administrator verification takes place when deleting Forwarding Hosts with /api/v1/delete/fwdhost. …
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External POC / Exploit Code
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