EUVD-2026-53340
GHSA-vhj5-26fr-9vrj
Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Network REST API, no auth, low complexity; C:L added over published score because description confirms settings data disclosure; I:H for full settings and file write; no availability impact.
Primary rating from Vendor (Wordfence).
CVSS VectorVendor: Wordfence
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Lifecycle Timeline
2DescriptionCVE.org
The wiseCampaign - WooCommerce Conversions Made Easy plugin for WordPress is vulnerable to unauthorized modification and disclosure of data due to every one of its REST API endpoints being registered with permission_callback => '__return_true' in all versions up to, and including, 1.1.16. This makes it possible for unauthenticated attackers to read and modify the plugin's banner, stockbar, and core settings - including saving/updating banner records, toggling stockbar/feature flags, changing the active banner, and uploading background-image files via wp_handle_upload() - without any nonce or capability check.
AnalysisAI
Unauthenticated REST API access in the wiseCampaign - WooCommerce Conversions Made Easy WordPress plugin (all versions through 1.1.16) allows any network attacker to read and overwrite the plugin's banner, stockbar, and core settings, and to upload arbitrary background image files via wp_handle_upload(), with zero authentication or nonce validation. Every REST endpoint the plugin registers uses the blanket permission callback '__return_true', which bypasses WordPress's built-in capability and nonce checks entirely. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | The wiseCampaign - WooCommerce Conversions Made Easy plugin must be installed and active on a WordPress site; no non-default configuration is required beyond this. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 3.1 base score of 7.5 (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N) accurately reflects the unauthenticated network vector and high integrity impact. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An unauthenticated attacker enumerates REST API endpoints exposed by the wiseCampaign plugin (discoverable via /wp-json/ route discovery) and sends crafted HTTP POST requests to overwrite banner content with malicious HTML or to upload a custom background image file, defacing the WooCommerce storefront. The same endpoint access allows toggling feature flags and changing the active banner, enabling persistent manipulation of the site's conversion-focused UI elements without any credentials. … |
| Remediation | Upstream fix available (commit); released patched version not independently confirmed. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours: disable the wiseCampaign plugin across all affected WordPress installations and audit configuration changes and file uploads for evidence of unauthorized access. …
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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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