PayloadCMS Payload db-d1-sqlite field path/operators sql injection

Summaryinfo

A vulnerability marked as critical has been reported in PayloadCMS Payload. This issue affects some unknown processing of the component db-d1-sqlite/db-postgres/db-sqlite/db-vercel-postgres. The manipulation of the argument field path/operators leads to sql injection. This vulnerability is documented as CVE-2026-105856. The attack can be initiated remotely. There is not any exploit available.

Detailsinfo

A vulnerability was found in PayloadCMS Payload (the affected version is unknown). It has been rated as critical. This issue affects an unknown code of the component db-d1-sqlite/db-postgres/db-sqlite/db-vercel-postgres. The manipulation of the argument field path/operators with an unknown input leads to a sql injection vulnerability. Using CWE to declare the problem leads to CWE-89. The product constructs all or part of an SQL command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended SQL command when it is sent to a downstream component. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

Payload is a free and open source headless content management system. Prior to 3.90.0 and 4.0.0-canary.34, an attacker with read and create or update access to a collection containing a json field or a blocks field with blocksAsJSON enabled can inject SQL through a crafted field path and operators. Collections without those fields are not affected, and richText fields are not affected. The SQLite packages are fixed in versions 3.90.0 and 4.0.0-canary.34, and the Postgres packages are fixed in version 3.73.0.

The advisory is shared at github.com. The identification of this vulnerability is CVE-2026-105856 since 10/06/2026. The exploitation is known to be easy. The attack may be initiated remotely. Technical details are known, but no exploit is available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 10/06/2026). MITRE ATT&CK project uses the attack technique T1505 for this issue.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Vendor

• PayloadCMS

Name

• Payload

Website

• Product: https://github.com/payloadcms/payload/

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