CVE-2026-19887High· 8.8▾ TwilightThe Welcart e-Commerce plugin for WordPress is vulnerable to PHP Object Injection in all versions up to, and including, 2.12.1 via deserialization of untrusted input in the Telecom EDY payment callback (usces_action_acting_transaction). …
▾ Twilight zone — High severity, or a signal on a lesser flaw
impact 48.4 · likelihood 0.2 · exploitation 0
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Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake.
Exploit-prediction probability, daily snapshots since Sep 6.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via NVD
0.6%
Last analysed / modified upstream
0.6% → 1.1%
The Welcart e-Commerce plugin for WordPress is vulnerable to PHP Object Injection in all versions up to, and including, 2.12.1 via deserialization of untrusted input in the Telecom EDY payment callback (usces_action_acting_transaction). Unauthenticated attackers can store arbitrary 'reserve' key/value pairs as order metadata during a public checkout, then invoke the callback with an attacker-chosen 'option' parameter to select and unserialize that metadata without any provider signature, source-address, transaction-identity or ownership check. A POP chain is present in the TCPDF library bundled with the plugin itself, so no additional plugin or theme is required. This makes it possible for unauthenticated attackers to delete arbitrary files on the server, including wp-config.php, which can lead to remote code execution when an attacker re-runs the WordPress installer against a database they control. Successful exploitation is contingent on an admin printing an invoice to trigger file deletion.
Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Connected by shared product, vendor, weakness, or advisory.
CVE-2026-111031Medium· 4.7Welcart e-Commerce < 2.12.6 - Unauthenticated Open Redirect via 'usces_referer' Parameter
CVE-2026-111027Medium· 6.8Welcart e-Commerce < 2.12.6 - Editor+ SQLi via 'log_id' Parameter
CVE-2026-111032Low· 3.8Welcart e-Commerce < 2.12.6 - Author+ Arbitrary Product SKU Update and Disclosure via item_sku_ajax
CVE-2026-107752Medium· 4.9Welcart e-Commerce <= 2.12.4 - Authenticated (Editor+) SQL Injection via 'wp_usces_order_old' Cookie
CVE-2026-87091High· 7.2The Welcart e-Commerce plugin for WordPress is vulnerable to Stored Cross-Site Scripting via Settlement Notification Parameters in all versions up to, and including, 2.12.2 due to insufficient input sanitization and output escaping
CVE-2025-15438Medium· 4.7A vulnerability was determined in PluXml up to 5.8.22