CVE-2026-103359
MediumCVSS 5.3Exploitation Probability (EPSS)
Low risk2th percentile - higher than 2% of all known CVEs
Summary
The PayDunya WooCommerce Payment Gateway WordPress plugin through 1.1.6 does not verify the authenticity of incoming payment notifications and, until the gateway is configured, authenticates them with a value derived from an empty secret that anyone can compute. This allows unauthenticated attackers to mark arbitrary WooCommerce orders as paid and completed.
Risk Assessment
An attacker can forge payment notifications and mark arbitrary orders as paid, leading to financial losses and incorrect order states. The risk is especially high before the payment gateway is configured.
Recommendation
Update the plugin to a version later than 1.1.6 when available, and immediately configure the payment gateway with a proper secret. Verify the status of existing orders for unauthorized changes.
Related vulnerabilities
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Linksys E5600 1.1.0.26 contains an improper authentication vulnerability in /cgi-bin/mesh_login.cgi (Login Handler). The attack can be launched remotely and the exploit has been publicly disclosed. The vendor did not respond and the product is no longer supported.
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Quest Foglight for Databases contains a deserialization of untrusted data vulnerability in the baseRmiServiceExporter component. An unauthenticated remote attacker can execute arbitrary code in the context of SYSTEM.
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In Quest Foglight for Databases, the writeTopologySectionToFile method does not validate a user-supplied path before using it in file operations. An unauthenticated remote attacker can execute arbitrary code in the context of SYSTEM.
Original NVD description (English source)
The PayDunya WooCommerce Payment Gateway WordPress plugin through 1.1.6 does not verify the authenticity of incoming payment notifications and, until the gateway is configured, authenticates them with a value derived from an empty secret that anyone can compute, allowing unauthenticated attackers to mark arbitrary WooCommerce orders as paid and completed.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS

