CVE-2025-67221
orjson does not limit recursion for deeply nested JSON documents
7.5
HIGH
CVSS 3.1
EPSS 0.03%
Description
The orjson.dumps function in orjson thru 3.11.4 does not limit recursion for deeply nested JSON documents.
How to fix CVE-2025-67221
To remediate CVE-2025-67221, upgrade the affected package to a fixed version below.
- PyPI/orjson—upgrade to 3.11.6 or later
- PyPI/orjson—upgrade to 3.11.5 or later
Is CVE-2025-67221 being exploited?
Low — EPSS is 0.0%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- from 0, < 3.11.6
- from 0, < 3.11.5
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 4.0 | — | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:P |
| osv | CVSS 3.1 | HIGH7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |