Security readout for executives and security teams
Plain-English summary
Piotnet Forms for WordPress allowed unauthenticated file uploads through insufficient file type validation in versions through 1.0.28. On an affected site, this could let an attacker place dangerous files on the server and may lead to remote code execution.
Executive priority
Treat this as a high-priority WordPress exposure if Piotnet Forms is installed. The business risk is server compromise from unauthenticated upload, but the supplied sources do not show confirmed active exploitation.
Technical view
CVE-2023-6220 is a CWE-434 arbitrary file upload issue in the piotnetforms_ajax_form_builder function. It is network reachable, requires no privileges or user interaction, and has CVSS 3.1 score 8.1 with high confidentiality, integrity, and availability impact.
Likely exposure
Exposure is likely limited to WordPress sites running the Piotnet Forms plugin at version 1.0.28 or older. Sites without this plugin, or running an unaffected newer version, are not indicated as affected by the supplied sources.
Exploitation context
The bundle does not cite CISA KEV listing or active exploitation. Exploitation would require reaching the vulnerable plugin function and successfully uploading a file that the server can later process dangerously; the CVSS vector marks attack complexity as high.
Researcher notes
Evidence supports arbitrary file upload due to file type validation weakness in piotnetforms_ajax_form_builder through 1.0.28. The source bundle includes WordPress Trac references for 1.0.26 and 1.0.29, but does not provide exploit details or a KEV signal.
Mitigation direction
- Inventory WordPress sites for Piotnet Forms and record installed versions.
- Upgrade Piotnet Forms from 1.0.28 or older after confirming vendor guidance.
- Temporarily disable affected upload forms if immediate upgrade is not possible.
- Review web server controls that prevent execution from upload directories.
- Check Wordfence and vendor advisories for any additional remediation guidance.
Validation and detection
- Confirm Piotnet Forms is absent or newer than 1.0.28 on each WordPress site.
- Review plugin code or changelog against the 1.0.29 reference when validating remediation.
- Inspect recent uploads for unexpected executable or script-like files.
- Check web server logs for suspicious unauthenticated form-builder upload activity.
- Verify upload directories do not allow server-side code execution.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-434: File access and web shell behavior lookup
File traversal and upload weaknesses can lead teams to review file, web shell, execution, and collection telemetry. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupExecution behavior lookup
The CVE wording references code or command execution, so execution technique review may help defensive triage. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupFile access behavior lookup
The CVE wording references file access or upload behavior, so file telemetry and web shell review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2023-6220 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- High
- CVSS
- 8.1 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H2.25.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
8.1HighVector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://www.wordfence.com/threat-intel/vulnerabilities/id/af2b7eac-a3f5-408f-b139-643e70b3f27a?source=cveCVE reference
- https://plugins.trac.wordpress.org/browser/piotnetforms/tags/1.0.26/inc/forms/ajax-form-builder.php#L430CVE reference
- https://plugins.trac.wordpress.org/browser/piotnetforms/tags/1.0.29/inc/forms/ajax-form-builder.php#L430CVE reference
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Unrestricted Upload of File with Dangerous Type
Unrestricted Upload of File with Dangerous Type represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.