An unrestricted file upload vulnerability was discovered in the Microweber 1.1.18 admin…
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 unrestricted file upload vulnerability was discovered in the Microweber 1.1.18 admin account page. An attacker can upload PHP code or any extension (eg- .exe) to the web server by providing image data and the image/jpeg content type with a .php extension.
Why it matters now
EPSS 0.01315 70th percentileScored 2026-11-07
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:microweber:microweber:1.1.18:*:*:*:*:*:*:* | 1.1.18 | Vulnerable | microweber |
- cpe:2.3:a:microweber:microweber:1.1.18:*:*:*:*:*:*:* Versions 1.1.18 Vulnerable ·microweber
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2020-23138
- 2026-10-03 Alias added: GHSA-gf2r-mc8c-m8r8
References
More Microweber vulnerabilities
- TI-2023-01763 Command Injection in microweber/microweber CVSS 3.1CRITICAL 9.8
- TI-2023-02100 Improper Privilege Management in microweber/microweber CVSS 3.1HIGH 8.8
- TI-2022-14518 Microweber v1.2.15 was discovered to allow attackers to perform an account takeover via a host header injection attack. CVSS 3.1HIGH 8.8
- TI-2023-04891 Use of Hard-coded Credentials in microweber/microweber CVSS 3.1HIGH 7.5
- TI-2025-37870 Microweber CMS 2.0 has Weak Password Requirements. CVSS 3.1HIGH 8.3
- TI-2022-04247 Cross-site Scripting (XSS) - Stored in microweber/microweber CVSS 3.1MEDIUM 6.1
Sources
- CVE-2020-23138 · CVE Program
- CVE-2020-23138 · NVD
- FIRST EPSS
- GHSA-gf2r-mc8c-m8r8 · GitHub Advisory Database · CC BY 4.0
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