An issue was discovered in Deserializer::read_vec in the cdr crate before 0.2.4 for Rust.
Priority MEDIUM 45CWE-908Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA and GitHub.
Summary
An issue was discovered in Deserializer::read_vec in the cdr crate before 0.2.4 for Rust. A user-provided Read implementation can gain access to the old contents of newly allocated heap memory, violating soundness.
Why it matters now
EPSS 0.01708 77th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed cdr (crates.io): 0.2.4
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 |
| — | cdr (crates.io) | before 0.2.4 | 0.2.4 | Patch available | GHSA-37jj-wp7g-7wj4 |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
- cdr (crates.io) Vendor— Affected before 0.2.4 Fixed in 0.2.4 Patch available GHSA-37jj-wp7g-7wj4
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:cdr_project:cdr:*:*:*:*:*:rust:*:* | before 0.2.4 | Vulnerable | Cdr Project |
- cpe:2.3:a:cdr_project:cdr:*:*:*:*:*:rust:*:* Versions before 0.2.4 Vulnerable ·Cdr Project
Remediation
- Fix · GHSA-37jj-wp7g-7wj4 cdr (crates.io) Fixed in 0.2.4 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2021-26305
- 2026-10-03 Alias added: GHSA-37jj-wp7g-7wj4
References
Sources
- CVE-2021-26305 · CVE Program
- CVE-2021-26305 · NVD
- FIRST EPSS
- GHSA-37jj-wp7g-7wj4 · GitHub Advisory Database · CC BY 4.0
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