Unauthenticated file upload in Anton Extensions WordPress plugin
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
- No fix listed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-434.
Summary
The Anton Extensions WordPress plugin through 1.2.2 does not check capabilities, verify nonces, or validate file types before writing attacker-supplied content to an attacker-chosen path (CWE-434). An unauthenticated remote attacker can upload arbitrary PHP files and run code on the server. A public exploit is linked in the references.
Written with Claude Haiku 5.5 from the sources below · 2026-10-29
Description from the CNA
The Anton Extensions WordPress plugin through 1.2.2 does not perform any capability check, nonce verification, or file-type validation before writing attacker-supplied content to an attacker-chosen path, allowing unauthenticated attackers to upload arbitrary PHP files and achieve remote code execution.
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 | Anton Extensions | up to 1.2.2 | — | No fix listed | CNA |
- Anton Extensions VendorUnknown Affected up to 1.2.2 Fixed in — No fix listed CNA
Remediation
The sources list no fixed version for Anton Extensions.
Written with Claude Haiku 5.5 from the sources below · 2026-10-29
Timeline
- 2026-10-11 Threatist record created from CVE-2026-104028
- 2026-10-11 Alias added: GHSA-66q5-xq7g-7g4h
References
Sources
- CVE-2026-104028 · CVE Program
- CVE-2026-104028 · NVD
- FIRST EPSS
- GHSA-66q5-xq7g-7g4h · 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