DQL injection via checkUserPassword GraphQL query in github.com/dgraph-io/dgraph

The checkUserPassword GraphQL query in Dgraph is vulnerable to Dgraph Query Language (DQL) injection. User-supplied password values are interpolated directly into a DQL checkpwd query without escaping or parameterization. An attacker can inject a password containing a double-quote character to break out of the DQL string literal and append arbitrary DQL query blocks.

CVSS 3.1

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Severity from

NVD

Also known as

CVE-2026-44840, GHSA-q2m9-6jp9-c6mc

• github.com/dgraph-io/dgraph/security/advisories/GHSA-q2m9-6jp9-c6mc
• github.com/dgraph-io/dgraph/commit/cee702c93f141eeb0c96a81f70830ec9e459efac
• github.com/dgraph-io/dgraph/releases/tag/v25.3.4