PT-2025-38665 · Crates.Io · Serde Yaml

Published 2025-09-11 · Updated 2025-09-11

OSV

Using serde yml::ser::Serializer.emitter can cause a segmentation fault, which is unsound.

The GitHub project for serde yml was archived after unsoundness issues were raised.

If you rely on this crate, it is highly recommended switching to a maintained alternative.

Recommended alternatives

• [serde norway](https://crates.io/crates/serde norway) - Maintained fork of serde yaml, using unsafe-libyaml-norway
• [serde yaml ng](https://crates.io/crates/serde yaml ng) - Maintained fork of serde yaml, using unmaintained unsafe-libyaml

Incomplete pure Rust alternatives

These implementation do not rely on C libyaml.

• [serde yaml2](https://crates.io/crates/serde yaml2)
• yaml-peg

Related Identifiers

RUSTSEC-2025-0068

Affected Products

Serde Yaml

References · 4

• https://osv.dev/vulnerability/RUSTSEC-2025-0068 · Vendor Advisory
• https://github.com/rustsec/advisory-db/issues/2395 · Note
• https://rustsec.org/advisories/RUSTSEC-2025-0068.html · Note
• https://crates.io/crates/serde_yml · Note