EUVD-2026-42009
GHSA-5fwf-q2jf-gp4v
Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Injection is unauthenticated (PR:N) but code execution requires the non-default Enable Logs setting (AC:H) and a separate administrator opening the log (UI:R); impact is full RCE (C/I/A:H).
Primary rating from Vendor (wordfence).
CVSS VectorVendor: wordfence
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Lifecycle Timeline
2DescriptionCVE.org
The WPFunnels - Funnel Builder for WooCommerce with Checkout & One Click Upsell plugin for WordPress is vulnerable to Remote Code Execution in all versions up to, and including, 3.12.7 via the 'postData' parameter parameter. This is due to unsanitized write of attacker-controlled postData values into a PHP-includeable .log file combined with the use of include_once to render that file in wpfnl_show_log. This makes it possible for unauthenticated attackers to execute code on the server. Exploitation requires that the Log Settings "Enable Logs" toggle is on and that an administrator subsequently opens the polluted log file via the plugin's Log Settings View UI; however, the nonce required to reach the optin endpoint is publicly emitted on every funnel step page, so the injection step itself is fully unauthenticated.
Articles & Coverage 1
AnalysisAI
Remote code execution in the WPFunnels (Funnel Builder for WooCommerce) WordPress plugin versions up to and including 3.12.7 lets attackers write attacker-controlled 'postData' into a PHP-includeable .log file that wpfnl_show_log later renders with include_once, yielding server-side code execution. The initial injection is fully unauthenticated because the nonce guarding the optin endpoint is publicly emitted on every funnel step page, though execution only fires once an administrator opens the poisoned log via the Log Settings View while the 'Enable Logs' toggle is active. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | The Log Settings 'Enable Logs' toggle MUST be turned on (non-default) so that the attacker-controlled 'postData' is written to the .log file, and an administrator MUST subsequently open that polluted log via the plugin's Log Settings View UI to trigger the include_once that executes the injected PHP - this admin action is the actual code-execution trigger. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The supplied CVSS 3.1 vector (AV:N/AC:L/PR:N/UI:N, 9.8) treats this as trivially exploitable pre-auth network RCE, but the description contradicts UI:N and AC:L: successful code execution requires (1) the non-default 'Enable Logs' toggle to be on and (2) an administrator to subsequently open the polluted log file in the Log Settings View. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An unauthenticated attacker scrapes a live funnel step page to harvest the publicly emitted optin nonce, then submits a crafted optin request whose 'postData' parameter embeds PHP code, which the plugin appends verbatim to its .log file. When a site administrator later opens that log through the Log Settings View, include_once parses the file and the attacker's PHP executes with the web server's privileges. … |
| Remediation | Vendor-released patch: 3.12.8 - update the WPFunnels plugin to 3.12.8 or later immediately (changeset 3597260 and the 3.12.7→3.12.8 diff at https://plugins.trac.wordpress.org/changeset?old_path=%2Fwpfunnels/tags/3.12.7&new_path=%2Fwpfunnels/tags/3.12.8; advisory at https://www.wordfence.com/threat-intel/vulnerabilities/id/5d84d749-0ab5-49dd-8e4f-45681f197742). … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours: Disable WPFunnels logging feature (Settings > Enable Logs toggle) and inventory all deployments running WPFunnels ≤3.12.7. …
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