GHSA-hhw4-xg65-fp2x — serde_yml
GHSA-hhw4-xg65-fp2x is a security vulnerability in serde_yml. No vendor fix is recorded yet; mitigation options are listed below.
serde_yml crate is unsound and unmaintained
Real-World Exposure
serde_ymlReal-time download stats are indexed for npm and PyPI packages. This vulnerability affects crates.io packages — download data is not available via public APIs for these ecosystems.
Description
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- Maintained fork ofserde_yaml, usingunsafe-libyaml-norwayserde_yaml_ng- Maintained fork ofserde_yaml, using unmaintainedunsafe-libyaml
Incomplete pure Rust alternatives
These implementation do not rely on C libyaml.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 🦀crates.io | serde_yml | all versions | No fix |
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for serde_yml, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Remediation status
No patched version of serde_yml has shipped for GHSA-hhw4-xg65-fp2x yet. Where your build allows, override or pin the dependency away from the vulnerable range, and apply any maintainer-recommended mitigation.
Mitigate without a patch
If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.
How O3 protects you
O3 Security's impact-aware SCA analyses which vulnerable code paths your application actually calls, so a match like GHSA-hhw4-xg65-fp2x can be triaged on real exposure rather than presence alone.
Tailored to GHSA-hhw4-xg65-fp2x. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.
Frequently Asked Questions
Is GHSA-hhw4-xg65-fp2x in your dependencies?
O3 Security finds GHSA-hhw4-xg65-fp2x across crates.io dependencies, including transitive ones, and its impact-aware SCA ranks findings by whether your code actually calls the vulnerable path.