---
id: "CVE-2026-111719"
kind: "vulnerability"
aliases: ["CVE-2026-111719"]
title: "Roncoo-pay: unauthenticated payment record lookup by guessable transaction number"
severity: "high"
cvss: 8.2
epss: null
exploited: false
status: "open"
category: "package"
products: []
ecosystems: []
tags: ["java", "package", "payments", "roncoo-pay"]
not_affected_if: []
published_at: "2026-10-16T18:17:56+00:00"
first_seen_at: "2026-10-23T21:57:14+00:00"
updated_at: "2026-10-25T03:04:25+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-111719", "first_seen_at": "2026-10-23T21:57:14+00:00"}]
---

# Roncoo-pay: unauthenticated payment record lookup by guessable transaction number

Roncoo-pay's F2FPayController.orderQuery endpoint lacks an authorization check, so anyone can request a payment record by supplying a trxNo value. Transaction numbers follow a predictable pattern (a '7' prefix plus a snowflake ID), so an attacker can guess them and read the full payment record of any merchant.

_Summary, check and fix written by a model from the sources; labelled as such._

## How to check

- unknown

## Fix

- unknown

## Timeline

- 2026-10-23T21:57:14+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-111719

## From the sources

Roncoo-pay through commit 9428382 contains a missing authorization vulnerability in F2FPayController.orderQuery that allows unauthenticated attackers to retrieve payment records by supplying a trxNo parameter. Attackers can guess transaction numbers, a '7' prefix plus a snowflake ID, to obtain the full serialized payment record of any merchant.

---

_Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai_