An issue was discovered in the yaml-rust crate before 0.4.1 for Rust.
Priority LOW 36CWE-674Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- Fixed
Attack profile from CVSS 3.0 · NVD. Fix status from CNA and GitHub. Impact type from CWE-674.
Summary
An issue was discovered in the yaml-rust crate before 0.4.1 for Rust. There is uncontrolled recursion during deserialization.
Why it matters now
EPSS 0.01411 72nd percentileScored 2026-11-07
Fix Fixed yaml-rust (crates.io): 0.4.1
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
| — | yaml-rust (crates.io) | before 0.4.1 | 0.4.1 | Patch available | GHSA-hv87-47h9-jcvq |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
- yaml-rust (crates.io) Vendor— Affected before 0.4.1 Fixed in 0.4.1 Patch available GHSA-hv87-47h9-jcvq
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:yaml-rust_project:yaml-rust:*:*:*:*:*:*:*:* | before 0.4.1 | Vulnerable | Yaml-rust Project |
- cpe:2.3:a:yaml-rust_project:yaml-rust:*:*:*:*:*:*:*:* Versions before 0.4.1 Vulnerable ·Yaml-rust Project
Remediation
- Fix · GHSA-hv87-47h9-jcvq yaml-rust (crates.io) Fixed in 0.4.1 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2018-20993
- 2026-10-03 Alias added: GHSA-hv87-47h9-jcvq
References
More Yaml-rust Project Yaml-rust vulnerabilities
- TI-2019-16009 Uncontrolled recursion in yaml-rust CVSS 3.0MEDIUM 6.5
Sources
- CVE-2018-20993 · CVE Program
- CVE-2018-20993 · NVD
- FIRST EPSS
- GHSA-hv87-47h9-jcvq · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences