CVE-2025-67221
High
Description
The orjson.dumps function in orjson thru 3.11.4 does not limit recursion for deeply nested JSON documents.
SeverityHigh
CVSS7.5
Exploit probability—
ProductIjl Orjson
PublishedJan 22, 2026
First seenJan 22, 2026
Weakness typeCWE-770Allocation of resources without limits
How to fix
Update
- orjson3.11.6, 3.11.5 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| ijl orjson | v ≤ 3.11.4 | — |
| orjsonPyPI | v < 3.11.6, v < 3.11.5 | 3.11.6, 3.11.5 |
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