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

Medium 5.3 Published Updated

Remote attackers can exploit prototype pollution in the json-schema-library to execute arbitrary code or escalate privileges.

Exploited in the wild
Not known
Login needed
Any signed-in user
Attackable
Over the internet
Victim action needed
Not needed
Fix
None listed

What is CVE-2026-16008?

CVE-2026-16008 is a medium-severity code injection vulnerability in sagold json-schema-library, published on 17 Jul 2026. Any signed-in user can exploit it over the network, with no action from the victim.

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.

Weakness: CWE-94, CWE-1321

Which versions are affected by CVE-2026-16008?

How do I fix CVE-2026-16008?

No fix has been published for CVE-2026-16008 yet. Limit exposure of the affected software until one is available.

Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.

Is CVE-2026-16008 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-16008 exists.

Sources

Also known as GHSA-gf3x-ww5j-mxxm.

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