CVE-2026-7460 mailcow-dockerized 2026-03b - Stored XSS in Queue Manager via unescaped
Stored XSS in mailcow-dockerized Queue Manager allows attackers to execute scripts in admin browsers via unescaped Postfix queue fields.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-7460?
CVE-2026-7460 is a high-severity cross-site scripting vulnerability in mailcow-dockerized, published on 20 May 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official 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.
Weakness: CWE-79
Which versions are affected by CVE-2026-7460?
How do I fix CVE-2026-7460?
No fix has been published for CVE-2026-7460 yet. Limit exposure of the affected software until one is available.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2026-7460 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-7460 exists.
Sources
Also known as GHSA-4wpv-p8hj-wr36.