Intel/AIKIDO-2026-592740
@joint/core
AIKIDO-2026-592740
@joint/core is vulnerable to Prototype Pollution
Prototype Pollution Pre-CVE Published 5 days ago
Found by Aikido Intel before public disclosure or CVE publication.
61
Medium Risk
This Affects:
@joint/core3.7.0 - 4.2.4
Fixed in 4.2.5Are you affected? Scan for Free
TL;DR
The release adds explicit guards in core merge/assign-like utilities to prevent prototype pollution by blocking or safely handling dangerous object keys (e.g., __proto__, constructor, prototype) during merge/pick/omit/assign operations. It also adds tests to confirm attacker payloads do not pollute Object.prototype/Function.prototype.
Who does this affect?
You are affected if you are using a version that falls within the vulnerable range.
Background info
@joint/core is vulnerable to Prototype Pollution in versions 3.7.0 - 4.2.4.
How to fix this
Upgrade the @joint/core library to the patch version.
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