rathena FluxCP up to 98cd4b8fd83228c11b36fb3d097b8e0f7c105a8d PayPal IPN PaymentNotifyRequest.php verifyiprange X-Real-IP origin validation

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.2$0-$5k1.99

Summaryinfo

A vulnerability, which was classified as critical, was found in rathena FluxCP up to 98cd4b8fd83228c11b36fb3d097b8e0f7c105a8d. Impacted is the function verifyiprange of the file lib/Flux/PaymentNotifyRequest.php of the component PayPal IPN Handler. The manipulation of the argument X-Real-IP results in origin validation. This vulnerability was named CVE-2026-116254. The attack may be performed from remote. In addition, an exploit is available. The vendor was contacted early about this disclosure but did not respond in any way.

Detailsinfo

A vulnerability, which was classified as critical, was found in rathena FluxCP up to 98cd4b8fd83228c11b36fb3d097b8e0f7c105a8d. Affected is the function verifyiprange of the file lib/Flux/PaymentNotifyRequest.php of the component PayPal IPN Handler. The manipulation of the argument X-Real-IP with an unknown input leads to a origin validation vulnerability. CWE is classifying the issue as CWE-346. The product does not properly verify that the source of data or communication is valid. This is going to have an impact on integrity, and availability.

The advisory is shared for download at gist.github.com. This vulnerability is traded as CVE-2026-116254. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Technical details and a public exploit are known.

The exploit is shared for download at gist.github.com. It is declared as proof-of-concept. The vendor was contacted early about this disclosure but did not respond in any way. By approaching the search of inurl:lib/Flux/PaymentNotifyRequest.php it is possible to find vulnerable targets with Google Hacking.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.5
VulDB Meta Temp Score: 6.2

VulDB Base Score: 6.5
VulDB Temp Score: 6.2
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Origin validation
CWE: CWE-346 / CWE-345
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Access: Public
Status: Proof-of-Concept
Download: 🔒
Google Hack: 🔒
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

10/25/2026 Advisory disclosed
10/25/2026 +0 days VulDB entry created
10/25/2026 +0 days VulDB entry last update

Sourcesinfo

Advisory: gist.github.com
Status: Confirmed

CVE: CVE-2026-116254 (🔒)
GCVE (CVE): GCVE-0-2026-116254
GCVE (VulDB): GCVE-100-426288
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 10/25/2026 17:39
Changes: 10/25/2026 17:39 (59)
Complete: 🔍
Submitter: qianqiu
Cache ID: 216::103

Submitinfo

Accepted

  • Submit #1009729: rathena FluxCP master branch, commit 98cd4b8 (2025-11-03) CWE-346 Origin Validation Error (by qianqiu)

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