CVE-2026-116254

MediumCVSS 6.5

Published: 26/10/2026(UTC)Updated: 31/10/2026(UTC)Translated: 26/10/2026(UTC)NVD NIST

Exploitation Probability (EPSS)

Low risk

0.26%

18th percentile - higher than 18% of all known CVEs

Summary

In rathena FluxCP up to 98cd4b8fd83228c11b36fb3d097b8e0f7c105a8d, the verifyiprange function in lib/Flux/PaymentNotifyRequest.php (PayPal IPN Handler component) allows an origin validation error via manipulation of the X-Real-IP argument. The attack can be carried out remotely and the exploit is publicly available. The vendor was contacted but did not respond.

Risk Assessment

A remote attacker could spoof a trusted IP source and bypass origin validation of PayPal IPN notifications, potentially leading to transaction forgery or unauthorized actions.

Recommendation

Implement your own validation fix for the X-Real-IP header in verifyiprange and do not rely solely on this header for origin verification.

Other vulnerabilities in FluxCP

CVE-2025-62797High
Critical CSRF vulnerability in FluxCP, a web-based control panel for rAthena servers. State-changing POST requests are authorized solely by session cookie without anti-CSRF tokens or robust Origin/Referer validation. An attacker can lure a logged-in user to perform sensitive actions unintentionally.

Original NVD description (English source)

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.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS