CVE-2026-103300— Eurobank WooCommerce Payment Gateway <= 2.1.1 - Unauthenticated Order Payment Forgery via Unverified Callback

Quick assessment

Affected

Unknown Eurobank WooCommerce Payment Gateway

Exploitation

No confirmed in-the-wild exploitation; assess based on exposure

Recommended action

Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Eurobank WooCommerce Payment Gateway WordPress 插件（版本 2.1.1 及以下）未验证支付确认请求是否确实来自支付提供商，且默认情况下用于身份验证的密钥为空。这使得未认证的攻击者无需任何密钥即可将任意待处理订单标记为已支付，或强制将任意订单状态设为失败。

CVSS 5.3 · Medium Updated Oct 26, 2026

Possible ATT&CK Techniques 2 AI

T1068 · Exploitation for Privilege Escalation T1190 · Exploit Public-Facing Application

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Vulnerability Information

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Vulnerability Title

Eurobank WooCommerce Payment Gateway <= 2.1.1 - Unauthenticated Order Payment Forgery via Unverified Callback

Source: CVE Program / CVE List V5

Vulnerability Description

The Eurobank WooCommerce Payment Gateway WordPress plugin through 2.1.1 does not verify that a payment-confirmation request genuinely originates from the payment provider, and ships with the secret that would authenticate it empty by default, allowing unauthenticated attackers to mark any pending order as paid, and to force any order into a failed status without any secret at all.

Source: CVE Program / CVE List V5

CVSS Information

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Source: CVE Program / CVE List V5

Vulnerability Type

N/A

Source: CVE Program / CVE List V5

Affected Products

Vendor	Product	Affected Versions	CPE	Subscribe
Unknown	Eurobank WooCommerce Payment Gateway	0 ~ 2.1.1	-

II. Public POCs for CVE-2026-103300

#	POC Description	Source Link	Shenlong Link

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No public POC found.

III. Intelligence Information for CVE-2026-103300

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Other References for CVE-2026-103300 (1)

https://wpscan.com/vulnerability/37851403-0765-4fc2-80f6-f70d3fc34a88/ exploit vdb-entry technical-description

https://www.cve.org/CVERecord?id=CVE-2026-103300

Same Patch Batch · Unknown · 2026-10-26 · 7 CVEs total

CVE-2026-111974	5.3 MEDIUM	GiveWP < 4.19.0.1 - Unauthenticated Donation Amount Restriction Bypass via Currency
CVE-2026-103299		nexi Alpha Bank for WooCommerce <= 2.2.0 - Unauthenticated Payment Confirmation Forgery vi
CVE-2026-103319		OPay Payment Gateway for WooCommerce <= 2.5.5 - Unauthenticated Payment Confirmation Forge
CVE-2026-103381		Mintpay <= 2.2.3 - Unauthenticated Order Payment Completion and Cancellation via Callback
CVE-2026-103298		CCAvenue Payment Gateway for WooCommerce <= 3.1 - Unauthenticated Order Payment Completion
CVE-2026-103306		iKhokha Payment Gateway < 3.0.4 - Unauthenticated Order Payment Forgery via Callback

IV. Related Vulnerabilities

Same vendor: Unknown