File Upload vulnerability in NucleusCMS v.3.71 allows a remote attacker to execute…
Priority MEDIUM 51CWE-434Published · 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 · CISA ADP. Fix status from CNA. Impact type from CWE-434.
Summary
File Upload vulnerability in NucleusCMS v.3.71 allows a remote attacker to execute arbitrary code via the /nucleus/plugins/skinfiles/?dir=rsd parameter.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.01169 67th 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
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
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:nucleuscms:nucleuscms:3.71:*:*:*:*:*:*:* | 3.71 | Vulnerable | Nucleuscms |
- cpe:2.3:a:nucleuscms:nucleuscms:3.71:*:*:*:*:*:*:* Versions 3.71 Vulnerable ·Nucleuscms
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2020-21474
- 2026-10-03 Alias added: GHSA-2jpx-j4q3-c28w
References
Sources
- CVE-2020-21474 · CVE Program
- CVE-2020-21474 · NVD
- FIRST EPSS
- GHSA-2jpx-j4q3-c28w · GitHub Advisory Database · CC BY 4.0
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