GraphQL-core: Denial of service via quadratic complexity in the OverlappingFieldsCanBeMerged validation rule
影響: pip:graphql-core >= 3.0.0, < 3.2.12 → 3.2.12, pip:graphql-core >= 3.3.0a1, < 3.3.0rc1 → 3.3.0rc1
The OverlappingFieldsCanBeMerged validation rule can be driven into quadratic — and in the worst case O(n²·m²) — running time by a small, highly compressible query. A single 364 KB document can occupy one CPU core for over five minutes during validation, before any resolver runs. Because the rule is part of specified_rules and therefore enabled by default, every GraphQL-core based server is affected at default settings. Details OverlappingFieldsCanBeMerged compares every pair of fields that sha…
Read on GitHub Advisory Database
| CVE | CVE-2026-75507 |
|---|---|
| Source | GitHub Advisory Database |
| Fetched | 10/23/2026, 05:09 AM |
| Data | Markdown JSON |
On 10/23/2026, 01:26 AM, GitHub Advisory Database published "GraphQL-core: Denial of service via quadratic complexity in the OverlappingFieldsCanBeMerged validation rule" (type: Advisory). Severity is "High" (high). Related technologies: Python. CVE: CVE-2026-75507.