EUVD-2026-43163
GHSA-mp2r-c4g7-25w6
Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Network-reachable endpoint requires no authentication (PR:N), no special conditions (AC:L), and causes only limited integrity impact via email field overwrite (I:L); scope is unchanged and no confidentiality or availability loss occurs.
Primary rating from Vendor (wordfence).
CVSS VectorVendor: wordfence
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Lifecycle Timeline
2DescriptionCVE.org
The NEX-Forms - Ultimate Forms Plugin for WordPress plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 9.2.2. This is due to the plugin not properly verifying that a user is authorized to perform an action. This makes it possible for unauthenticated attackers to overwrite the saved_admin_email, saved_user_email, and saved_user_email_address fields of arbitrary form entries belonging to other users, and cause the site to dispatch attacker-controlled email content to attacker-chosen recipient addresses.
AnalysisAI
Authorization bypass in the NEX-Forms WordPress plugin (all versions through 9.2.2) allows unauthenticated remote attackers to overwrite email metadata fields on arbitrary form entries and weaponize the victim WordPress site as an outbound email relay. The CVSS vector (PR:N/AC:L/AV:N) confirms zero authentication and zero configuration prerequisites beyond plugin activation. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | The NEX-Forms plugin (versions ≤9.2.2) must be installed and active on the WordPress site. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 5.3 Medium score accurately captures the limited blast radius per individual exploitation event (I:L only - no confidentiality or availability impact), but understates the aggregate operational risk: bulk abuse of unauthenticated endpoints across many WordPress sites enables spam or phishing infrastructure built on legitimate domains, causing deliverability damage and reputational harm disproportionate to the raw score. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An unauthenticated attacker scans for WordPress sites with NEX-Forms active, then enumerates form entry IDs through predictable integer sequences. The attacker sends a crafted HTTP POST request to the vulnerable email-update endpoint in main.php with an attacker-controlled recipient address and email body payload, overwriting the saved_user_email_address field on a victim's form entry. … |
| Remediation | An upstream code fix is available via WordPress plugin repository changeset 3584399 (https://plugins.trac.wordpress.org/changeset?reponame=&old=3584399%40nex-forms-express-wp-form-builder&new=3584399%40nex-forms-express-wp-form-builder); however, a specific released fixed version number is not independently confirmed from the available input data - verify the current version in the WordPress.org plugin directory and update to any version above 9.2.2 once officially available. … Detailed patch versions, workarounds, and compensating controls in full report. |
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Same weakness CWE-862 – Missing Authorization
View allSame technique Authentication Bypass
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External POC / Exploit Code
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