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CVE-2026-116254— rathena FluxCP PayPal IPN PaymentNotifyRequest.php verifyiprange origin validation

Quick assessment

Affected
rathena FluxCP
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.

在 rathena FluxCP 的 98cd4b8fd83228c11b36fb3d097b8e0f7c105a8d 版本及之前版本中发现了一个漏洞。该问题影响组件 PayPal IPN 处理器中文件 lib/Flux/PaymentNotifyRequest.php 内的 verifyiprange 函数。攻击者可通过操纵 X-Real-IP 参数触发源验证错误。此攻击可远程实施，且利用代码已在公开渠道获取，可能被实际利用。厂商在披露初期即被联系，但至今未作出任何回应。

CVSS 6.5 · Medium

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2026-116254

Vulnerability Information
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Vulnerability Title
rathena FluxCP PayPal IPN PaymentNotifyRequest.php verifyiprange origin validation
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability was identified in rathena FluxCP up to 98cd4b8fd83228c11b36fb3d097b8e0f7c105a8d. This issue affects the function verifyiprange of the file lib/Flux/PaymentNotifyRequest.php of the component PayPal IPN Handler. The manipulation of the argument X-Real-IP leads to origin validation error. The attack is possible to be carried out remotely. The exploit is publicly available and might be used. The vendor was contacted early about this disclosure but did not respond in any way.
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:L
Source: CVE Program / CVE List V5
Vulnerability Type
源验证错误
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
rathena FluxCP 98cd4b8fd83228c11b36fb3d097b8e0f7c105a8d cpe:2.3:a:rathena:fluxcp:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-116254

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III. Intelligence Information for CVE-2026-116254

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Proof of Concept for CVE-2026-116254 (1)

IV. Related Vulnerabilities

Same product: FluxCP
Same vendor: rathena
Same weakness: CWE-346