Vulnerability in Rathena Fluxcp
CVE-2026-116254
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
- Rathena Fluxcp — versions 98cd4b8fd83228c11b36fb3d097b8e0f7c105a8d
Weakness classification (CWE)
References
- vuldb.com/vuln/426288 (technical-description, vdb-entry)
- vuldb.com/vuln/426288/cti (signature, permissions-required)
- vuldb.com/cve/CVE-2026-116254 (third-party-advisory)
- vuldb.com/submit/1009729 (third-party-advisory)
- gist.github.com/qianqiusujiu/2a57c3721116efc6fe7c20b41ad68a5d (exploit)
Frequently asked questions
- What is CVE-2026-116254?
- CVE-2026-116254 is a medium-severity vulnerability in Rathena Fluxcp, classified under Insufficient Verification of Data Authenticity. CVSS score: 6.5/10. Published 2026-10-26.
- How severe is CVE-2026-116254?
- Medium severity. CVSS v3 base score is 6.5 out of 10.