GHSA-hhw4-xg65-fp2x
serde_yml crate is unsound and unmaintained
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.
Attack profile
How easy it is to exploit
- Attack vector
- Local
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- None
- Integrity
- None
- Availability
- High
What each source reports
GitHub Advisories Score used
serde_yml crate is unsound and unmaintained
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.
- Record
GHSA-hhw4-xg65-fp2x- CVSS 4.0
- 6.9 Medium
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N - Weakness
- CWE-787
- Updated
- 2026-11-02
OSV
serde_yml crate is unsound and unmaintained
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.
- Record
GHSA-hhw4-xg65-fp2x- CVSS 4.0
- 6.9 Medium
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N - Weakness
- CWE-787
- Updated
- 2026-11-02
OSVRUSTSEC-2025-0068No score
serde_yml crate is unsound and unmaintained
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.
- Record
RUSTSEC-2025-0068- Updated
- 2026-11-02
Affected packages
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | GitHub Advisories, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
GHSA-hhw4-xg65-fp2x is a medium vulnerability (CVSS 6.9) in serde_yml, published September 11, 2025. No source lists public exploit code. No source names a fixed version.