In WonderCMS 2.3.1, the upload functionality accepts random application extensions and leads to malicious File Upload.
Priority MEDIUM 48CWE-434Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- Low
- 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 3.0 · NVD. Fix status from CNA. Impact type from CWE-434.
Summary
In WonderCMS 2.3.1, the upload functionality accepts random application extensions and leads to malicious File Upload.
Why it matters now
EPSS 0.07299 94th percentileScored 2026-11-07
Public exploit Yes 2 exploit referencesTagged by NVD and the CNA
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-2017-14521
- 2026-10-03 Alias added: GHSA-35x3-rj44-584q
References
More Wondercms vulnerabilities
- TI-2024-21288 A cross-site scripting (XSS) vulnerability in the Settings section of WonderCMS v3.4.3… CVSS 3.1CRITICAL 9.6
- TI-2024-18303 A Server-Side Request Forgery (SSRF) in the installUpdateThemePluginAction function of… CVSS 3.1CRITICAL 9.1
- TI-2020-17938 A server-side request forgery (SSRF) vulnerability in the addCustomThemePluginRepository… CVSS 3.1CRITICAL 9.8
- TI-2025-35425 WonderCMS 3.5.0 is vulnerable to Server-Side Request Forgery (SSRF) in the custom module… CVSS 3.1MEDIUM 6.5
- TI-2024-27571 A Server-Side Request Forgery (SSRF) in the Plugins Page of WonderCMS v3.4.3 allows… CVSS 3.1HIGH 7.1
- TI-2020-17939 A remote code execution vulnerability in the installUpdateThemePluginAction function in… CVSS 3.1CRITICAL 9.8
Sources
- CVE-2017-14521 · CVE Program
- CVE-2017-14521 · NVD
- FIRST EPSS
- GHSA-35x3-rj44-584q · GitHub Advisory Database · CC BY 4.0
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