CVE-2026-62361 SQL injection in listmonk

Medium 5.5 Published Updated

Authenticated users can exploit SQL injection in the export API to read sensitive database tables and modify data, exposing admin credentials.

Exploited in the wild
Not known
Login needed
An administrator
Attackable
Over the internet
Victim action needed
Not needed
Fix
None listed

What is CVE-2026-62361?

CVE-2026-62361 is a medium-severity SQL injection vulnerability in knadh listmonk, published on 15 Jul 2026. An attacker needs administrator access to exploit it, with no action from the victim.

Official description

listmonk is a standalone, self-hosted, newsletter and mailing list manager. Prior to 6.2.0, listmonk’s GET /api/subscribers/export endpoint injects the user-controlled query parameter into QuerySubscribersForExport in internal/core/subscribers.go without calling validateQueryTables, unlike GET /api/subscribers, allowing an authenticated user with subscribers:sql_query and subscribers:get_all to read arbitrary database tables such as users and settings and execute data-modifying PostgreSQL CTEs. This issue is fixed in version 6.2.0.

Weakness: CWE-89

Which versions are affected by CVE-2026-62361?

How do I fix CVE-2026-62361?

No fix has been published for CVE-2026-62361 yet. Limit exposure of the affected software until one is available.

Use parameterised queries everywhere and never build SQL by joining strings. Upgrade affected software first; a web application firewall only buys time. More about SQL injection.

Is CVE-2026-62361 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-62361 exists.

Sources

Also known as GHSA-xgjr-7j9q-2h4r.

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