### Vulnerability Summary: pytries datrie Deserialization Vulnerability **Vulnerability Overview** This vulnerability exists within the `pytries datrie` library. The `datrie.Trie` class uses the unsafe `pickle.load()` method to deserialize internal data when loading trie files via the `Trie.load()`, `Trie.read()`, and `Trie.__setstate__()` methods. Attackers can craft malicious `.trie` files containing malicious pickle payloads. When an application loads such files, arbitrary Python code will be executed. Because this unsafe deserialization is hidden behind the data loading API, users are often unaware that loading these files involves code execution. **Scope of Impact** * **Affected Library/Version**: `pytries datrie` (Version <= 0.8.3) * **Affected Components**: `datrie.Trie` class (specifically methods `Trie.load()`, `Trie.read()`, `Trie.__setstate__()`) * **Unaffected Components**: `datrie.BaseTrie` class (as it does not use pickle) * **Affected Scenarios**: Any application loading `.trie` files from untrusted sources (e.g., user uploads, shared storage, downloaded datasets). **Remediation** No specific remediation code or patches were provided in the screenshot. * **Mitigation Advice**: Avoid using the `datrie.Trie` class to load files from untrusted sources. * **Alternative**: Use the unaffected `datrie.BaseTrie` class (if applicable). * **General Advice**: Applications should only load `.trie` files from trusted sources or switch to a more secure serialization format. **POC/Exploit Code** No POC code blocks were directly included in the screenshot, but relevant resource links are provided: * Source: `https://github.com/dhabaleshwar/Open-Source-Vulnerabilities/blob/main/datrie_exec.md`