medium5.3
CVE-2026-48038
joi has an uncaught RangeError on deeply nested input through recursive `link()` schemas
Impact
joi is a schema description language and data validator for JavaScript. Prior to 17.13.4 and 18.2.1, denial of service is possible via an untrapped exception in services validating user-supplied JSON or object input with recursive link() schemas. When validate() is called without try/catch in a request handler, deeply nested input can trigger an unhandled RangeError and potentially crash the process; lower-impact paths using validateAsync() or try/catch produce a RangeError instead of a structured ValidationError. This issue is fixed in versions 17.13.4 and 18.2.1.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| npm | joi | >= 18.0.0, < 18.2.1 | 18.2.1 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/advisories/GHSA-q7cg-457f-vx79
- https://github.com/hapijs/joi/security/advisories/GHSA-q7cg-457f-vx79
- https://github.com/hapijs/joi/pull/3113
- https://github.com/hapijs/joi/commit/2392713d3e9dd91ba752ac0c96e0eaf3d24b9a11
- https://github.com/hapijs/joi/commit/97bd51de94d595a2d8949eb3bec0dbdd2f8a7a74
- https://github.com/hapijs/joi/commit/fc146a628ab9cc250854407722d9f8738c9548e7