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| Package Name | Ecosystem | Vulnerable Versions | First Patched Version |
|---|---|---|---|
| github.com/ipld/go-ipld-prime | go | < 0.19.0 | 0.19.0 |
The vulnerability occurs specifically in the 'json' codec (not 'dag-json'), where encoding Bytes/Link nodes should be rejected. The commit diff shows added error handling in the dag-json codec and new tests for the JSON codec that enforce errors when encoding Bytes/Links. This implies the JSON codec's Marshal function previously lacked these checks. The CWE-20 (Improper Input Validation) alignment confirms missing validation for unsupported data types during encoding.
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