Unauthenticated form entry overwrite in NEX-Forms WordPress plugin
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- None · Low · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-639.
Summary
The NEX-Forms WordPress plugin from 9.2.1 before 9.3.1 is affected. It does not perform authorization, ownership or request validation checks before updating stored form entries (CWE-639). An unauthenticated remote attacker can overwrite, erase, reassign or append to any submitted form entry by referencing its sequential identifier. A public exploit is linked in the references.
Written with Claude Haiku 5.5 from the sources below · 2026-10-28
Description from the CNA
The NEX-Forms WordPress plugin before 9.3.1 does not perform any authorization, ownership or request-validation checks before updating stored form entries, allowing unauthenticated attackers to overwrite, permanently erase, reassign or append to any previously submitted form entry by referencing its sequential identifier.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- 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 |
|---|---|---|---|---|---|
| Unknown | NEX-Forms | 9.2.1 to before 9.3.1 | 9.3.1 | Patch available | CNA |
- NEX-Forms VendorUnknown Affected 9.2.1 to before 9.3.1 Fixed in 9.3.1 Patch available CNA
Remediation
Update the NEX-Forms WordPress plugin to version 9.3.1, the fixed version.
Written with Claude Haiku 5.5 from the sources below · 2026-10-28
- Fix · CNA NEX-Forms (Unknown) Fixed in 9.3.1
Timeline
- 2026-10-14 Threatist record created from CVE-2026-106166
- 2026-10-14 Alias added: GHSA-wp3w-fh35-w7pm
- 2026-10-14 CVSS score added · CISA ADP
- 2026-10-14 Weakness changed · CISA ADP
- 2026-10-14 CISA SSVC decision points changed
References
Sources
- CVE-2026-106166 · CVE Program
- CVE-2026-106166 · NVD
- FIRST EPSS
- GHSA-wp3w-fh35-w7pm · 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