Description
mailcow-dockerized contains a stored cross-site scripting vulnerability in the administrator Queue Manager. The Queue Manager fetches mail queue entries from /api/v1/get/mailq/all, copies server-controlled Postfix queue fields into DataTables rows, and renders several of those fields as HTML without adequate output encoding.



This issue affects mailcow-dockerized: 2026-03b.
Published: 2026-05-20
Score: 7.4 High
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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History

Wed, 20 May 2026 13:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Wed, 20 May 2026 04:45:00 +0000

Type Values Removed Values Added
First Time appeared Mailcow
Mailcow mailcow Dockerized
Vendors & Products Mailcow
Mailcow mailcow Dockerized

Wed, 20 May 2026 03:30:00 +0000

Type Values Removed Values Added
Description mailcow-dockerized contains a stored cross-site scripting vulnerability in the administrator Queue Manager. The Queue Manager fetches mail queue entries from /api/v1/get/mailq/all, copies server-controlled Postfix queue fields into DataTables rows, and renders several of those fields as HTML without adequate output encoding. This issue affects mailcow-dockerized: 2026-03b.
Title mailcow-dockerized 2026-03b - Stored XSS in Queue Manager via unescaped
Weaknesses CWE-79
References
Metrics cvssV4_0

{'score': 7.4, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:P/VC:H/VI:H/VA:N/SC:L/SI:L/SA:N'}


Subscriptions

Mailcow Mailcow Dockerized
cve-icon MITRE

Status: PUBLISHED

Assigner: Fluid Attacks

Published:

Updated: 2026-05-20T12:48:15.205Z

Reserved: 2026-04-29T18:02:06.122Z

Link: CVE-2026-7460

cve-icon Vulnrichment

Updated: 2026-05-20T12:48:03.522Z

cve-icon NVD

Status : Deferred

Published: 2026-05-20T04:16:56.270

Modified: 2026-06-17T11:02:27.717

Link: CVE-2026-7460

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-05-20T05:00:17Z

Weaknesses