Security readout for executives and security teams
Plain-English summary
CVE-2026-1947 lets an unauthenticated internet user change existing form submissions in vulnerable NEX-Forms WordPress sites. This is mainly a data integrity issue: submitted leads, orders, requests, or records could be overwritten. Public sources do not show known active exploitation, but the bug is high severity and easy to reach over the network.
Executive priority
Treat as a high-priority integrity risk for any business process relying on NEX-Forms submissions. Prioritize customer-facing and revenue, support, compliance, or intake forms. If the plugin is absent, no action is needed beyond normal monitoring.
Technical view
NEX-Forms – Ultimate Forms Plugin for WordPress versions up to and including 9.1.9 have an IDOR/CWE-639 flaw in submit_nex_form(). Missing validation of the user-controlled nf_set_entry_update_id parameter allows unauthenticated modification of arbitrary form entries. CVSS v3.1 is 7.5: AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N.
Likely exposure
Internet-facing WordPress sites using NEX-Forms versions 9.1.9 or earlier are the likely exposed population. Exposure is highest where forms collect operationally important, regulated, financial, support, or customer data. Sites not using this plugin are not affected based on the provided sources.
Exploitation context
The vulnerability requires no authentication, no user interaction, and low attack complexity. The cited CVE data and Wordfence entry support arbitrary form-entry overwrite risk. The source bundle does not include evidence of active exploitation, and KEV status is false.
Researcher notes
The public bundle identifies the vulnerable parameter, affected range, CWE, CVSS vector, Wordfence advisory, and WordPress Trac changeset. It does not explicitly name a fixed version or confirm exploitation in the wild. Avoid assuming confidentiality impact beyond the published CVSS, which lists integrity impact as high.
Mitigation direction
- Inventory WordPress sites for NEX-Forms installations and versions.
- Prioritize any site running NEX-Forms 9.1.9 or earlier.
- Check the plugin vendor or WordPress.org for the fixed release guidance.
- Update the plugin when a fixed version is available and approved.
- Restrict or disable affected forms if immediate updating is not possible.
- Back up form-entry data before remediation where operationally important.
Validation and detection
- Confirm whether NEX-Forms is installed on each WordPress site.
- Record the installed plugin version and compare it to 9.1.9.
- Review form-entry records for unexpected overwrites or unexplained changes.
- Check web and application logs for unusual unauthenticated form submission activity.
- Verify remediation by confirming the plugin is no longer at an affected version.
- Monitor vendor, Wordfence, and CVE updates for fixed-version clarification.
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-639: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. 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 lookupCVE-2026-1947 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
- 7.5 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
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:L/PR:N/UI:N/S:U/C:N/I:H/A:N3.93.6Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
7.5HighVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Source materials
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.
Authorization Bypass Through User-Controlled Key
Authorization Bypass Through User-Controlled Key represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.