An issue was discovered in the rkyv crate before 0.6.0 for Rust.
Priority LOW 35CWE-909Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Denial of service, Information disclosure
- Confidentiality · integrity · availability
- High · None · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA and GitHub. Impact type from CWE-772, CWE-908 and the CVSS impact.
Summary
An issue was discovered in the rkyv crate before 0.6.0 for Rust. When an archive is created via serialization, the archive content may contain uninitialized values of certain parts of a struct.
Why it matters now
EPSS 0.01079 65th percentileScored 2026-11-07
Fix Fixed rkyv (crates.io): 0.6.0
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 |
| — | rkyv (crates.io) | before 0.6.0 | 0.6.0 | Patch available | GHSA-w5cr-frph-hw7f |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
- rkyv (crates.io) Vendor— Affected before 0.6.0 Fixed in 0.6.0 Patch available GHSA-w5cr-frph-hw7f
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:rkyv_project:rkyv:*:*:*:*:*:rust:*:* | before 0.6.0 | Vulnerable | Rkyv Project |
- cpe:2.3:a:rkyv_project:rkyv:*:*:*:*:*:rust:*:* Versions before 0.6.0 Vulnerable ·Rkyv Project
Remediation
- Fix · GHSA-w5cr-frph-hw7f rkyv (crates.io) Fixed in 0.6.0 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2021-31919
- 2026-10-03 Alias added: GHSA-w5cr-frph-hw7f
References
Advisory 2
Sources
- CVE-2021-31919 · CVE Program
- CVE-2021-31919 · NVD
- FIRST EPSS
- GHSA-w5cr-frph-hw7f · 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