CVE-2023-26144: Graphql

Medium severity, CVSS 5.3. EPSS: 1.5% chance of exploitation in the next 30 days.

Versions of the package graphql from 16.3.0 and before 16.8.1 are vulnerable to Denial of Service (DoS) due to insufficient checks in the OverlappingFieldsCanBeMergedRule.ts file when parsing large queries. This vulnerability allows an attacker to degrade system performance. **Note:** It was not proven that this vulnerability can crash the process.

Affected products

• Graphql Graphql: from 16.3.0, before 16.8.1 (fixed in 16.8.1); version 17.0.0 only

Published 2023-09-20. Last modified 2026-06-17.