CVE-2026-48038joi: Uncaught RangeError on deeply nested input through recursive `link()` schemas

Description

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.

Data: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Published as the sources state it, in English.

Affected products and versions

References and patches

• https://github.com/hapijs/joi/security/advisories/GHSA-q7cg-457f-vx79
• https://github.com/hapijs/joi/pull/3113
• https://github.com/hapijs/joi/commit/97bd51de94d595a2d8949eb3bec0dbdd2f8a7a74
• https://github.com/hapijs/joi/commit/fc146a628ab9cc250854407722d9f8738c9548e7