> JapanHacked_
[Contained][Severity: Moderate][Web app exploit]

Weblife: unauthorized access to the customer management system of its OEM website-building service may have leaked data of up to 7,425 people

An access-control flaw in Weblife's OEM website-building service was abused; data of up to 7,425 people may have leaked, and some data was altered.

Disclosed

2026-08-18

Organizations involved

1

Leaked or at risk

7.4K

7,425

Downtime

Unknown

What happened

  1. Its monitoring detected unusual access and it began an investigation. A third party had accessed the system from August 14 to 17, some customer data was altered, and data of contracting companies and individuals may have leaked. [1] [2]

  2. It announced the unauthorized access. The scope was up to 7,425 people using the service through OEM partners; its direct-sale "BiNDup" was not affected. No leak of passwords or card data was found. [1] [2]

  3. A follow-up confirmed that names, addresses, phone numbers, sex, occupations and birth dates did not leak, and said email addresses and some management data may still have leaked. The access-control flaw is fixed. [1]

Timeline

  1. Started 2026-08-14
  2. Detected 2026-08-17
  3. Disclosed 2026-08-18
  4. 4 days

Attack or cause

Method
[Web app exploit]
Impact
[Data leak]
Entry point
Web app

Data exposed or at risk

[E-mail address]

Organizations involved

  • [Breached][Moderate]Tokyo, MinatoInformation and communications7,425 leaked

    Weblife Inc.

    A flaw in the access control of the customer management system used through OEM partners let customer data be viewed and altered. A follow-up narrowed the data that may have leaked to email addresses and some management data.

Open in organization search

Sources

  1. [1][Official]【続報】不正アクセスによる情報漏えいの可能性に関する調査結果のご報告[2026年8月28日更新]Weblife Inc. · 2026-08-28
  2. [2][News]OEM向けホームページ作成サービスに不正アクセス、最大7,425名の顧客情報が漏えいした可能性ScanNetSecurity · 2026-08-25 08:05