The package integrity validation in yarn < 1.19.0 contains a TOCTOU vulnerability where the hash is computed before writing a package to cache. It's not computed again when reading from the cache. This may lead to a cache pollution attack.
| Package (Ecosystem) | Introduced | Fixed | Limit |
|---|---|---|---|
| yarn(npm) | 0 | 1.19.0 | N/A |
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