CVE-2026-31891: Cockpit CMS has SQL Injection in MongoLite Aggregation Optimizer via toJsonExtractRaw()
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 - Bypass the state=1 published-content filter to access unpublished or restricted content.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.
Other sources
Cockpit is a headless content management system. Any Cockpit CMS instance running version 2.13.4 or earlier with API access enabled is potentially affected by a a SQL Injection vulnerability in the MongoLite Aggregation Optimizer. Any deployment where the /api/content/aggregate/{model} endpoint is publicly accessible or reachable by untrusted users may be vulnerable, and attackers in possession of a valid read-only API key (the lowest privilege level) can exploit this vulnerability — no admin access is required. An attacker can inject arbitrary SQL via unsanitized field names in aggregation queries, bypass the state=1 published-content filter to access unpublished or restricted content, and extract unauthorized data from the underlying SQLite content database. This vulnerability has been patched in version 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.
— MITRE
Affected Software
Remediation
Event History
Frequently Asked Questions
What is the severity of CVE-2026-31891?
CVE-2026-31891 is categorized as a SQL Injection vulnerability that can potentially allow unauthorized access to data.
How do I fix CVE-2026-31891?
To mitigate CVE-2026-31891, upgrade to Cockpit CMS version 2.13.5 or later.
Which versions of Cockpit CMS are affected by CVE-2026-31891?
Cockpit CMS version 2.13.4 and earlier are affected by CVE-2026-31891 when API access is enabled.
What type of vulnerability is CVE-2026-31891?
CVE-2026-31891 is a SQL Injection vulnerability specifically in the MongoLite Aggregation Optimizer.
Can CVE-2026-31891 be exploited remotely?
Yes, CVE-2026-31891 can be exploited remotely if API access is enabled on affected versions.