Path traversal in kkFileView lets attackers write files
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- None · High · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA.
Summary
kkFileView v5.0.0 through v5.0.2 contains a path traversal flaw (CWE-22) in FileController.java. The fileUpload endpoint concatenates the path parameter into the upload base path without validation. An unauthenticated remote attacker can create directories and write files outside the intended fileDir root.
Written with Claude Haiku 5.5 from the sources below · 2026-10-29
Description from the CNA
kkFileView v5.0.0 through v5.0.2 contains a directory traversal vulnerability in FileController.java. The fileUpload, createFolder and existsFile endpoints accept a "path" parameter that is concatenated into the upload base path without validation, allowing unauthenticated attackers to create arbitrary directories and write arbitrary files outside the intended fileDir root via a crafted multipart request
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- Yes
- 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 |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
Remediation
The sources list no fixed version for kkFileView.
Written with Claude Haiku 5.5 from the sources below · 2026-10-29
Timeline
- 2026-10-06 Threatist record created from CVE-2026-95140
- 2026-10-06 Alias added: GHSA-qj7c-283g-mmh2
- 2026-10-07 CVSS score added · CISA ADP
- 2026-10-07 Weakness changed · CISA ADP
- 2026-10-07 CISA SSVC decision points changed
- 2026-10-07 Priority changed: LOW → HIGH
References
Sources
- CVE-2026-95140 · CVE Program
- CVE-2026-95140 · NVD
- FIRST EPSS
- GHSA-qj7c-283g-mmh2 · GitHub Advisory Database · CC BY 4.0
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