CVE-2025-31223

Overview

Advisory: Apple Security Advisory

Impact:

Description: Processing maliciously crafted web content may lead to memory corruption

Researchers: Andreas Jaegersberger & Ro Achterberg of Nosebeard Labs

Attribute	Value
CVE	CVE-2025-31223
Bugzilla	289387
Component	JSC
Bug Class	LogicError
Severity	medium
Commit	92e69a181eb39835…
Advisory	Apple Advisory

Root Cause Analysis

The issue was addressed with improved checks.

Files Changed

Source Files

• Source/JavaScriptCore/runtime/JSONObject.cpp

Test Files

• JSTests/stress/fast-stringifier-check-string-length.js