syn has no known vulnerabilities on the latest version (2.0.117). DepScope rates its health at 85/100 (low risk).

What is the latest version of syn?

The latest version of syn is 2.0.117, released 2026-02-20.

Does syn have known vulnerabilities?

No known vulnerabilities on the latest version of syn.

No, syn is actively maintained. Latest release: 2.0.117 (2026-02-20).

What are alternatives to syn?

Popular alternatives to syn in Cargo include: hashbrown, getrandom, windows-sys, rand_core.

What license does syn use?

syn is licensed under MIT OR Apache-2.0.

syn

cargov2.0.117

Parser for Rust source code

License MIT OR Apache-2.0permissive350 versions0 deps324,057,232 weekly dl

dtolnay/syn

/ 100

Health

safe to use

[email protected] is safe to use (health: 85/100)

Health breakdown0 – 100

20/25

maintenance

20/20

popularity

25/25

security

15/15

maturity

5/15

community

0/15

popularity_floor

Vulnerabilities

none known

OSS Scorecard

OpenSSF security posture score

5.7/10

moderate

Maintainer trust

Active maintainers (3m)

3

Contributors (12m)

8

Primary author dominance

93%

GitHub stars

3,310

single author dominance

Quality signals

OSS Criticality

0.78critical

Download trend

stable(+2.4%)

Health History

Dependency Tree

License Audit

API access

Get this data programmatically — free, no authentication.

curl https://depscope.dev/api/check/cargo/syn

syn