cskefu File Upload MediaController.java upload cross site scripting
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- Passive
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Cross-site scripting, Code execution
- Confidentiality · integrity · availability
- None · Low · None
- Fix status
- No fix listed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-79 and CWE-94.
Summary
A vulnerability was detected in cskefu up to 8.0.1. Impacted is the function Upload of the file com/cskefu/cc/controller/resource/MediaController.java of the component File Upload. The manipulation results in cross site scripting. The attack may be launched remotely. The exploit is now public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
Why it matters now
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 |
|---|---|---|---|---|---|
| — | cskefu | 8.0.0; 8.0.1 | — | No fix listed | CNA |
- cskefu Vendor— Affected 8.0.0; 8.0.1 Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2026-2557
- 2026-10-03 Alias added: GHSA-ggg6-jj2q-72rr
References
More Cskefu vulnerabilities
- TI-2026-02182 cskefu Endpoint MediaController.java server-side request forgery CVSS 4.0MEDIUM 5.3
- TI-2022-16842 Insecure permissions in cskefu v7.0.1 allows unauthenticated attackers to arbitrarily add administrator accounts. CVSS 3.1HIGH 7.5
Sources
- CVE-2026-2557 · CVE Program
- CVE-2026-2557 · NVD
- FIRST EPSS
- GHSA-ggg6-jj2q-72rr · 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