high7.7
CVE-2025-67221
orjson does not limit recursion for deeply nested JSON documents
Impact
The orjson.dumps function in orjson before 3.11.6 does not limit recursion for deeply nested JSON documents.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| pip | orjson | < 3.11.6 | 3.11.6 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Ijl | Orjson | through 3.11.4 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/ijl/orjson
- https://github.com/kpatsakis/orjson_vulnerability
- https://github.com/advisories/GHSA-hx9q-6w63-j58v
- https://nvd.nist.gov/vuln/detail/CVE-2025-67221
- https://github.com/ijl/orjson/issues/620
- https://github.com/kpatsakis/CVE-2025-67221/issues/1
- https://github.com/ijl/orjson/commit/62bb185b70785ded49c79c26f8c9781f1e6fe370
- https://github.com/pypa/advisory-database/tree/main/vulns/orjson/PYSEC-2026-107.yaml