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CVE-2026-103310— PayHere Payment Gateway 2.4.0 - 2.4.5 - Unauthenticated Payment Bypass via Unverified Payment Notification

Quick assessment

Affected
Unknown PayHere 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.

PayHere Payment Gateway WordPress 插件（版本 2.4.0 至 2.4.5）在商户密钥（merchant secret）未设置时，未对支付通知的真实性进行验证；而该密钥未设置正是其默认状态。这使得未授权的攻击者能够伪造支付确认信息，从而将任意订单标记为“已支付”，而实际上并未完成付款。

CVSS 5.3 · Medium

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2026-103310

Vulnerability Information
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Vulnerability Title
PayHere Payment Gateway 2.4.0 - 2.4.5 - Unauthenticated Payment Bypass via Unverified Payment Notification
Source: CVE Program / CVE List V5
Vulnerability Description
The PayHere Payment Gateway WordPress plugin from 2.4.0 through 2.4.5 does not verify the authenticity of payment notifications when the merchant secret is unset, which is the default state, allowing unauthenticated attackers to forge a payment confirmation and mark any order as paid without payment.
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 PayHere Payment Gateway 2.4.0 ~ 2.4.5 -

II. Public POCs for CVE-2026-103310

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III. Intelligence Information for CVE-2026-103310

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Other References for CVE-2026-103310 (1)

IV. Related Vulnerabilities

Same product: PayHere Payment Gateway
Same vendor: Unknown