CVE-2026-31891

Impact

This is a SQL Injection vulnerability in the MongoLite Aggregation Optimizer.

Any Cockpit CMS instance running version 2.13.4 or earlier with API access enabled

is potentially affected.

Who is impacted:

• Any deployment where the /api/content/aggregate/{model} endpoint is publicly

  accessible or reachable by untrusted users.

• Attackers in possession of a valid read-only API key (the lowest privilege level)

  can exploit this vulnerability — no admin access is required.

What an attacker can do:

• Inject arbitrary SQL via unsanitized field names in aggregation queries.
• Bypass the _state=1 published-content filter to access unpublished or restricted content.
• Extract unauthorized data from the underlying SQLite content database.

Confidentiality impact is High. Integrity and availability are not directly affected

by this vulnerability.

Patches

This vulnerability has been patched in version 2.13.5.

All users running Cockpit CMS version 2.13.4 or earlier are strongly advised to

upgrade to 2.13.5 or later immediately.

• https://github.com/Cockpit-HQ/Cockpit/releases/tag/2.13.5

The fix applies the same field-name sanitization introduced in v2.13.3 for toJsonPath()

to the toJsonExtractRaw() method in lib/MongoLite/Aggregation/Optimizer.php,

closing the injection vector in the Aggregation Optimizer.