Walletdoc Payment Gateway for WooCommerce: Unauthenticated SQL injection and webhook forgery
Summary
The WordPress plugin Walletdoc Payment Gateway for WooCommerce does not properly sanitize user input used in SQL statements. Its payment webhook is verified with a signing secret that is empty by default. Unauthenticated attackers can therefore inject SQL and mark arbitrary orders as paid, which can lead to order fraud and exposure of database content.
Affected
- Walletdoc Payment Gateway for WooCommerce plugin (wc-walletdoc-payment-gateway) versions before 1.8.5
- Vendor: Unknown
Fixed in
- Version 1.8.5
Workaround
- No vendor workaround documented.
- If an update cannot be applied immediately, confirm the webhook signing secret is set to a non-empty value.
- Restrict access to the webhook endpoint to the payment provider's source addresses where possible.
Exploitation
- CISA SSVC: Automatable yes, technical impact partial, exploitation none.
- No public proof of concept found.
- No evidence of exploitation in the wild; not listed in CISA KEV.
Our recommendation
- Inventory all WordPress sites using this plugin and identify the version.
- Update to version 1.8.5 or later without delay.
- Verify that the webhook signing secret is set.
- Review orders marked as paid since the plugin was installed or last updated and compare them with the payment provider's records.
- Monitor web server logs for suspicious requests to the webhook endpoint.
Public exploits
PoC-in-GitHub, Metasploit and Exploit-DB list nothing for this CVE.
Research sources
- WPScan advisory CVE-2026-103307 wpscan.com
- WPScan plugin page wc-walletdoc-payment-gateway wpscan.com
- WordPress.org plugin page wordpress.org
- VulDB entry 419290 vuldb.com
- Positive Technologies PT-2026-113654 vulners.com
- EUVD-2026-100875 vulners.com
Researched and written up in English and German by an AI (Claude by Anthropic) based on NVD, CISA, EPSS and the sources listed. The vendor information is authoritative. Researched on 1 Nov 2026, 08:14.
Original description (NVD)
The Walletdoc Payment Gateway for WooCommerce WordPress plugin before 1.8.5 does not properly sanitize and escape user input before using it in a SQL statement, and verifies its payment webhook with a signing secret that is empty by default, allowing unauthenticated attackers to perform SQL injection attacks and to mark arbitrary orders as paid.
NVD references (1)
Sources
The tracker combines official, freely usable data sources – updated continuously:
- NVD (NIST) – CVEs, rating (CVSS), affected products
- CISA KEV – vulnerabilities confirmed by CISA as actively exploited
- CISA Vulnrichment – CISA assessment (SSVC) in the official CVE record
- FIRST EPSS – probability of exploitation
- Microsoft MSRC – Patch Tuesday: vulnerabilities, severity, updates
- PoC-in-GitHub – public proof-of-concept repositories
- Metasploit (Rapid7) – modules of the Metasploit Framework
- Exploit-DB (OffSec) – archive of public exploits (links only)
- Patch days: official vendor pages (linked per vendor) (Vendor patch days)
This product uses data from the NVD API but is not endorsed or certified by the NVD. EPSS data © FIRST.org.
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