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| Package Name | Ecosystem | Vulnerable Versions | First Patched Version |
|---|---|---|---|
| deno | rust | >= 1.8.0, < 1.40.4 | 1.40.4 |
The vulnerability stemmed from the hostname matching logic in AuthTokens::get, which used hostname.to_lowercase().ends_with(&t.host). This allowed suffix matches without proper domain boundary validation. The commit diff shows this logic was replaced with AuthDomain::matches that adds proper domain validation, confirming the original function's vulnerability.
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