Unrestricted file upload in Checkout Files Upload for WooCommerce
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-434.
Summary
The Checkout Files Upload for WooCommerce WordPress plugin before 2.4.0 does not validate uploaded file types when its accepted file types setting is left empty. This lets unauthenticated users upload arbitrary files, including PHP files, which leads to remote code execution on servers that execute PHP from the uploads directory. The flaw is classified as CWE-434.
Written with Claude Haiku 5.5 from the sources below · 2026-10-29
Description from the CNA
The Checkout Files Upload for WooCommerce WordPress plugin before 2.4.0 does not validate uploaded file types when its accepted file types setting is left empty, which it documents as the way to accept all files, allowing unauthenticated users to upload arbitrary files, including PHP files that lead to remote code execution on servers that execute PHP from the uploads directory.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Total
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 |
|---|---|---|---|---|---|
| Unknown | Checkout Files Upload for WooCommerce | before 2.4.0 | 2.4.0 | Patch available | CNA |
- Checkout Files Upload for WooCommerce VendorUnknown Affected before 2.4.0 Fixed in 2.4.0 Patch available CNA
Remediation
Update Checkout Files Upload for WooCommerce to version 2.4.0 or later, which fixes the issue.
Written with Claude Haiku 5.5 from the sources below · 2026-10-29
- Fix · CNA Checkout Files Upload for WooCommerce (Unknown) Fixed in 2.4.0
Timeline
- 2026-10-28 Threatist record created from CVE-2026-103688
- 2026-10-28 Alias added: GHSA-h6g6-j3rf-hcqm
- 2026-10-28 CVSS score added · CISA ADP
- 2026-10-28 Weakness changed · CISA ADP
- 2026-10-28 CISA SSVC decision points changed
- 2026-10-28 Priority changed: LOW → MEDIUM
References
Sources
- CVE-2026-103688 · CVE Program
- CVE-2026-103688 · NVD
- FIRST EPSS
- GHSA-h6g6-j3rf-hcqm · 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