An issue was discovered in the chacha20 crate before 0.2.3 for Rust.
Priority LOW 36CWE-190Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- High · None · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA and GitHub.
Summary
An issue was discovered in the chacha20 crate before 0.2.3 for Rust. A ChaCha20 counter overflow makes it easier for attackers to determine plaintext.
Why it matters now
EPSS 0.01325 71st percentileScored 2026-11-07
Fix Fixed chacha20 (crates.io): 0.2.3
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 |
| — | chacha20 (crates.io) | before 0.2.3 | 0.2.3 | Patch available | GHSA-j2r6-2m5c-vgh5 |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
- chacha20 (crates.io) Vendor— Affected before 0.2.3 Fixed in 0.2.3 Patch available GHSA-j2r6-2m5c-vgh5
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:chacha20_project:chacha20:*:*:*:*:*:rust:*:* | before 0.2.3 | Vulnerable | Chacha20 Project |
- cpe:2.3:a:chacha20_project:chacha20:*:*:*:*:*:rust:*:* Versions before 0.2.3 Vulnerable ·Chacha20 Project
Remediation
- Fix · GHSA-j2r6-2m5c-vgh5 chacha20 (crates.io) Fixed in 0.2.3 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2019-25005
- 2026-10-03 Alias added: GHSA-j2r6-2m5c-vgh5
References
Sources
- CVE-2019-25005 · CVE Program
- CVE-2019-25005 · NVD
- FIRST EPSS
- GHSA-j2r6-2m5c-vgh5 · 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