crates.io package intelligence

syn — deep security report

ShadowCanopy's full breakdown of syn on crates.io: verdict, AI analysis, dependency chain, network behavior, prebuilds, and obfuscated code.

Safe to use
Deep-scanned by ShadowCanopy — no threats found in its code, dependencies, or network behavior.
Scanned 8/4/2026
Approvedsyn@3.0.3View on registry ↗latest: 3.0.3

False positive. The 'F::' match is from a generic parser function signature (F: Parser, F::Output) in the legitimate syn crate. No network code, IPs, or malicious behavior exists in the provided source.

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AI breakdown

Plain-English summary of what this package does and how it behaves.

syn is a Rust crate providing a library for parsing Rust source code into a syntax tree, with support for expressions, attributes, derives, and custom syntax elements.

Capabilities

  • Parses Rust syntax trees
  • Supports custom keywords and punctuation
  • Generates trait implementations (clone, debug, hash, fold)
  • Includes benchmarks for parsing files and Rust code

Data access

  • None observed

Network

  • Hardcoded public IP in network code (per static findings)

Static analysis flags potential hardcoded IPs, but the package is a standard syntax parser with no scripts or dependencies; review source before use in sensitive environments.

Security findings (2)

Static analysis rule matches, with the exact code that triggered them.

highHardcoded public IP in network codeATK-028src/parse.rs

File src/parse.rs contains a hardcoded public IP (F::) used in network code — review for hidden exfiltration or C2 endpoints.

highHardcoded public IP in network codeATK-028syn-3.0.3/src/parse.rs

File syn-3.0.3/src/parse.rs contains a hardcoded public IP (F::) used in network code — review for hidden exfiltration or C2 endpoints.

Files in package (208)

.cargo_vcs_info.jsonsyn-3.0.3/.cargo_vcs_info.jsonCargo.locksyn-3.0.3/Cargo.lockCargo.tomlsyn-3.0.3/Cargo.tomlCargo.toml.origsyn-3.0.3/Cargo.toml.origLICENSE-APACHEsyn-3.0.3/LICENSE-APACHELICENSE-MITsyn-3.0.3/LICENSE-MITREADME.mdsyn-3.0.3/README.mdbenches/file.rssyn-3.0.3/benches/file.rsbenches/rust.rssyn-3.0.3/benches/rust.rssrc/attr.rssyn-3.0.3/src/attr.rssrc/bigint.rssyn-3.0.3/src/bigint.rssrc/buffer.rssyn-3.0.3/src/buffer.rssrc/classify.rssyn-3.0.3/src/classify.rssrc/custom_keyword.rssyn-3.0.3/src/custom_keyword.rssrc/custom_punctuation.rssyn-3.0.3/src/custom_punctuation.rssrc/data.rssyn-3.0.3/src/data.rssrc/derive.rssyn-3.0.3/src/derive.rssrc/discouraged.rssyn-3.0.3/src/discouraged.rssrc/drops.rssyn-3.0.3/src/drops.rssrc/error.rssyn-3.0.3/src/error.rs

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This report reflects ShadowCanopy's threat intelligence at page load and is informational, not a warranty. Canonical URL: https://shadowcanopy.dev/packages/crates/syn