CVE-2026-93754 json
payever – WooCommerce Gateway <= 4.8.0 - Unauthenticated Arbitrary File Upload Leading to Remote Code Execution
published 2026-11-07 2 d ago modified 2026-11-08 13 h ago also EUVD-2026-118549
- cvss
- 9.8
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.9%
- EPSS 0.9% chance of exploitation in 30 days, percentile 59%
- public exploits
- 0
- none known
Summary
The payever – WooCommerce Gateway plugin for WordPress is vulnerable to arbitrary file upload leading to remote code execution in various versions up to, and including, 4.8.0. Three WooCommerce-API callbacks (payever_set_sandbox_api_keys, payever_toggle_subscription, payever_synchronization_incoming) are registered with no authentication, capability check, or nonce, and the upload_image() routine writes a remotely fetched file to the public uploads directory using an attacker-controlled basename() BEFORE validating the file type. This makes it possible for unauthenticated attackers to write an executable PHP file and achieve remote code execution. NOTE: the token-recovery leg of the full chain depends on the plugin's outbound validateToken() call to Payever's service; the unauthenticated hard-coded-credential identity overwrite (CWE-862/CWE-798) is independently exploitable.
CISA SSVC
- Exploitation
- none
- Automatable
- yes
- Technical impact
- total
- Assessed
- 14 h ago
Exploit prediction
0.87% chance of exploitation in the next 30 days, higher than 59% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
Affected products
- payever payever Checkout – Composable Payment Gateway
Classification
- Weakness
-
- CWE-434 Unrestricted Upload of File with Dangerous Type
- Technology feeds
References
- wordfence.com /threat-intel/vulnerabilities/id/03412063-d73a-4c5c-8dc6-3e76a5d975a5?source=cve
- plugins.trac.wordpress.org /browser/payever-woocommerce-gateway/trunk/includes/class-payever-synchronization.php?rev=3647773#L22
- plugins.trac.wordpress.org /browser/payever-woocommerce-gateway/trunk/includes/class-payever-synchronization.php?rev=3647773#L116
- plugins.trac.wordpress.org /browser/payever-woocommerce-gateway/trunk/woocommerce-payever-gateway.php?rev=3647773#L145
- plugins.trac.wordpress.org /browser/payever-woocommerce-gateway/trunk/includes/logger/class-payever-logger.php?rev=3647773#L18
- plugins.trac.wordpress.org /browser/payever-woocommerce-gateway/trunk/includes/class-payever-log-manager.php?rev=3647773#L35
- plugins.trac.wordpress.org /browser/payever-woocommerce-gateway/trunk/includes/synchronization/management/class-payever-subscription-mana
- plugins.trac.wordpress.org /browser/payever-woocommerce-gateway/trunk/includes/class-payever-synchronization.php?rev=3647773#L683
- plugins.trac.wordpress.org /browser/payever-woocommerce-gateway/trunk/includes/synchronization/management/class-payever-import-manager.ph
- plugins.trac.wordpress.org /browser/payever-woocommerce-gateway/trunk/includes/synchronization/actions/class-payever-action-update-produc
- plugins.trac.wordpress.org /browser/payever-woocommerce-gateway/trunk/includes/synchronization/actions/class-payever-action-update-produc
- plugins.trac.wordpress.org /browser/payever-woocommerce-gateway/trunk/vendor/payever/core-sdk-php/lib/Payever/Core/Http/Client/CurlClient
- plugins.trac.wordpress.org /changeset?reponame=&old=3761918%40payever-woocommerce-gateway&new=3761918%40payever-woocommerce-gateway
Sources
- CVE List CVE-2026-93754
- NVD CVE-2026-93754
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.