YiFang CMS P_file.php mergeMultipartUpload unrestricted upload
Priority MEDIUM 57CWE-284Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Security bypass, Code execution
- Confidentiality · integrity · availability
- Low · Low · Low
- Fix status
- No fix listed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-284 and CWE-434.
Summary
A flaw has been found in YiFang CMS up to 2.0.5. This affects the function mergeMultipartUpload of the file app/utils/base/plugin/P_file.php. This manipulation of the argument File causes unrestricted upload. Remote exploitation of the attack is possible. The exploit has been published and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
Why it matters now
Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00342 27th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- No
- Technical impact
- Partial
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 |
|---|---|---|---|---|---|
| YiFang | CMS | 2.0.0; 2.0.1; 2.0.2; 2.0.3; 2.0.4; 2.0.5 | — | No fix listed | CNA |
- CMS VendorYiFang Affected 2.0.0; 2.0.1; 2.0.2; 2.0.3; 2.0.4; 2.0.5 Fixed in — No fix listed CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:wanglongcn:yifang:*:*:*:*:*:*:*:* | up to 2.0.5 | Vulnerable | wanglongcn |
- cpe:2.3:a:wanglongcn:yifang:*:*:*:*:*:*:*:* Versions up to 2.0.5 Vulnerable ·wanglongcn
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2025-9400
- 2026-10-03 Alias added: GHSA-5q3f-j5cg-9xmv
References
More YiFang vulnerabilities
- TI-2025-08611 YiFang CMS L_tool.php sql injection CVSS 4.0MEDIUM 5.3
- TI-2025-08610 YiFang CMS Migrate.php exportInstallTable information disclosure CVSS 4.0MEDIUM 6.9
- TI-2026-05820 Yifang CMS Extended Management L_rbac_admin.php store cross site scripting CVSS 4.0MEDIUM 5.1
- TI-2026-03233 YiFang CMS D_singlePageGroup.php update cross site scripting CVSS 4.0MEDIUM 5.1
- TI-2026-03232 YiFang CMS D_singlePage.php update cross site scripting CVSS 4.0MEDIUM 5.1
- TI-2026-03231 YiFang CMS D_friendLink.php update cross site scripting CVSS 4.0MEDIUM 5.1
Sources
- CVE-2025-9400 · CVE Program
- CVE-2025-9400 · NVD
- FIRST EPSS
- GHSA-5q3f-j5cg-9xmv · 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