Unrestricted file upload in 9front
Priority LOW 30CWE-434Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Active
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · None · None
- Fix status
- Fixed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-434.
Summary
Mothra would respect a default value given by a website for HTML file upload forms. An attacker could craft a website with a malicious default file path, and then conceal this form element.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00276 20th percentileScored 2026-11-07
Fix Fixed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- 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
No affected products listed by the sources yet.
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2026-9053
- 2026-10-03 Alias added: GHSA-38r3-cgcv-g3qp
References
More 9front vulnerabilities
- TI-2026-07956 Invalid IP packets cause a kernel panic CVSS 4.0CRITICAL 9.2
- TI-2024-07565 User impersonation for lib9p based 9p fileservers CVSS 4.0HIGH 8.8
Sources
- CVE-2026-9053 · CVE Program
- CVE-2026-9053 · NVD
- FIRST EPSS
- GHSA-38r3-cgcv-g3qp · GitHub Advisory Database · CC BY 4.0
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