An arbitrary file upload vulnerability in the move_uploaded_file() function of LJCMS v4.3…
Priority MEDIUM 45CWE-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 · NVD. Fix status from CNA. Impact type from CWE-434.
Summary
An arbitrary file upload vulnerability in the move_uploaded_file() function of LJCMS v4.3 allows attackers to execute arbitrary code.
Why it matters now
EPSS 0.01603 75th 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
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2020-20979
- 2026-10-03 Alias added: GHSA-r2wm-99x8-326h
References
More 8cms Ljcms vulnerabilities
- TI-2020-13922 File Upload vulnerability in LJCMS v.4.3.R60321 allows a remote attacker to execute… CVSS 3.1CRITICAL 9.8
- TI-2020-14018 An issue in the user login box of LJCMS v1.11 allows attackers to hijack user accounts via brute force attacks. CVSS 3.1CRITICAL 9.8
- TI-2020-13875 A SQL injection vulnerability in /question.php of LJCMS Version v4.3.R60321 allows… CVSS 3.1HIGH 7.5
Sources
- CVE-2020-20979 · CVE Program
- CVE-2020-20979 · NVD
- FIRST EPSS
- GHSA-r2wm-99x8-326h · GitHub Advisory Database · CC BY 4.0
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