opensysusers through 0.6 does not safely use eval on files in sysusers.d that may contain…
Priority MEDIUM 47CWE-94Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-94.
Summary
opensysusers through 0.6 does not safely use eval on files in sysusers.d that may contain shell metacharacters. For example, it allows command execution via a crafted GECOS field whereas systemd-sysusers (a program with the same specification) does not do that.
Why it matters now
EPSS 0.02933 87th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet
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 |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:artixlinux:opensysusers:*:*:*:*:*:*:*:* | up to 0.6 | Vulnerable | Artixlinux |
- cpe:2.3:a:artixlinux:opensysusers:*:*:*:*:*:*:*:* Versions up to 0.6 Vulnerable ·Artixlinux
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2021-40084
- 2026-10-03 Alias added: GHSA-2hgh-26fm-566h
References
Sources
- CVE-2021-40084 · CVE Program
- CVE-2021-40084 · NVD
- FIRST EPSS
- GHSA-2hgh-26fm-566h · 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