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| Package Name | Ecosystem | Vulnerable Versions | First Patched Version |
|---|---|---|---|
| github.com/usememos/memos | go | < 0.9.1 | 0.9.1 |
The vulnerability stemmed from missing authorization checks after resource retrieval in multiple handlers. The patch added explicit creator ID verification post-fetch (e.g., checking memo.CreatorID != userID) where previously authorization was only enforced through query parameters. This pattern was present in memo, resource, and shortcut handlers. The JSON struct tag additions (json:"-") in API models prevent malicious parameter injection, but the core vulnerability was in the server-side handlers' authorization flow.
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