Vulnerability · Published Jul 17, 2026 · Assigned by VulDB

CVE-2026-16008sagold json-schema-library propertyDependencies.ts parsePropertyDependencies prototype pollution

Medium 6.3

In plain English

A medium-severity prototype pollution in json-schema-library from sagold. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 25% of all known vulnerabilities).

Severity (CVSS 3.1)6.3Medium

Exploit odds (30 days)0.3%top 74.8% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

A security vulnerability has been detected in sagold json-schema-library 11.5.0/11.5.1. This impacts the function parsePropertyDependencies of the file src/keywords/propertyDependencies.ts. The manipulation leads to improperly controlled modification of object prototype attributes. The attack can be initiated remotely. Upgrading to version 11.6.0 will fix this issue. The identifier of the patch is 432287ee6f68a02ce6f015354618486ec427a32d. It is advisable to upgrade the affected component.

Affected products (as reported)

Vendor	Product	Versions
sagold	json-schema-library	11.5.011.5.1

Weakness: CWE-1321, CWE-94 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C

References

VDB-379752 | sagold json-schema-library propertyDependencies.ts parsePropertyDependencies prototype pollution vdb-entry, technical-description
VDB-379752 | CTI Indicators (IOB, IOC, TTP, IOA) signature, permissions-required
CVE-2026-16008 | CVE Analysis and Report third-party-advisory
Submit #856721 | Node.js json-schema-library 11.5.1 Prototype Pollution third-party-advisory
https://github.com/sagold/json-schema-library/issues/111 issue-tracking
https://github.com/sagold/json-schema-library/commit/432287ee6f68a02ce6f015354618486ec427a32d patch
https://github.com/sagold/json-schema-library/releases/tag/v11.6.0 patch
https://github.com/sagold/json-schema-library/ product