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CVSS Score
-| Package Name | Ecosystem | Vulnerable Versions | First Patched Version |
|---|---|---|---|
| Microsoft.ChakraCore | nuget | < 1.8.1 | 1.8.1 |
The vulnerability stems from improper type handling during JIT optimization. The commit diff shows:
This indicates the original code:
This mismatch between expected and actual type information could lead to incorrect memory access patterns (CWE-787) when the JIT engine generates code based on the corrupted type assumptions. The patch specifically addresses this by adding cleanup logic, confirming this was the vulnerable path.