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BWH Hotels Discloses Six-Month Data Breach Affecting Guest Reservations
BWH Hotels, operator of the Best Western brand, confirmed a security incident involving unauthorized access to a web application used for guest reservations. The breach spanned approximately six months, exposing personal guest information from October 2025 through April 2026.
Taiwan CERT warns of three vulnerabilities in WeiQiao Information SSO and electronic directory system, including critical unauthenticated LFI (CVE-2026-3826)
TWCERT/CC disclosed three vulnerabilities affecting WeiQiao Information’s “Single Sign-On and Electronic Directory Service System” (單一簽入暨電子目錄服務系統). Two medium-severity issues are open redirect (CVE-2026-3824) and reflected XSS (CVE-2026-3825), both described as exploitable by authenticated remote attackers via user interaction. A critical issue, CVE-2026-3826 (CVSS 9.8), is a local file inclusion flaw described as exploitable by an unauthenticated remote attacker and could enable server-side arbitrary code execution. TWCERT/CC recommends upgrading to IFTOP_P4_181 or later; versions before IFTOP_P4_181 are affected.
Ransomware group “Nitrogen” claims Foxconn breach with 8TB of alleged internal data, raising supply-chain exposure questions
Taiwan’s iThome reports that ransomware operators using the “Nitrogen” name have listed Foxconn (Hon Hai Precision Industry) as a victim on a dark-web leak site, claiming they stole 8TB of data comprising about 11 million files. The actors allege the haul includes confidential orders, projects, and design sketches tied to multiple technology companies, but the report notes those partner references are not yet independently verified. The disclosure follows a widely reported early-May IT outage at Foxconn’s U.S. Wisconsin campus; Foxconn confirmed an “IT network issue” and later stated that production operations at affected North American sites remained normal after response actions were initiated.
Taiwan CERT warns of two local privilege escalation flaws in AVACAST for Windows (CVE-2026-7279, CVE-2026-7280)
TWCERT/CC published a Taiwan Vulnerability Note (TVN-202604011) detailing two vulnerabilities affecting Herlin Digital Technology’s AVACAST for Windows versions 5.10.10.43 and earlier. The issues—DLL hijacking (CVE-2026-7279, CVSS 7.8 High) and an unquoted service path (CVE-2026-7280, CVSS 6.7 Medium)—could allow authenticated local attackers (and in the second case, a local admin) to execute code with SYSTEM privileges. TWCERT/CC recommends updating to AVACAST 5.10.10.45 or later.
Taiwan CERT warns of critical unauthenticated API flaw in GCB/FCB government-finance security audit software (CVE-2026-4312)
TWCERT/CC disclosed a critical “Missing Authentication” vulnerability in Chunghwa Long Network’s GCB/FCB government/financial cybersecurity configuration audit software. The issue allows a remote, unauthenticated attacker to use an API function to create a new administrator-privileged account. Affected deployments are versions prior to 20260108; users are advised to upgrade to 20260108 or later.
Microsoft May 2026 Patch Tuesday: 137 Microsoft CVEs disclosed; 13 flagged as likely exploitation targets
Microsoft’s May 12, 2026 Patch Tuesday release disclosed 137 CVEs across Microsoft products (down from 165 the prior month, per iThome). Including third‑party component fixes Microsoft shipped, the total reaches 265 vulnerabilities. iThome highlights 13 vulnerabilities Microsoft assessed as more likely to be targeted by attackers; most are elevation-of-privilege issues across Windows components, plus two Word remote code execution bugs. Four of the 13 are rated Critical, and the highest CVSS score called out is 9.1 for a Microsoft Single Sign-On (SSO) plugin used with Jira and Confluence.
Claude Chrome Extension Vulnerability Permits Unauthorized AI Hijacking
Security researchers at LayerX have identified a design flaw dubbed ‘ClaudeBleed’ in the Claude in Chrome extension. The vulnerability allows malicious extensions with zero permissions to inject commands and hijack the Claude AI agent, potentially leading to unauthorized data exfiltration and sensitive cross-site operations.
Dual High-Severity Vulnerabilities Identified in SunNet Corporate Training and Performance Management Systems
Taiwan’s TWCERT/CC has disclosed two high-severity security vulnerabilities affecting SunNet’s Corporate Training Management System (CTMS) and Corporate Appraisal Performance System (CAPS). These flaws include a SQL injection vulnerability and an arbitrary file upload weakness that could lead to full system compromise.
Taiwan CERT warns of two high-severity flaws in Galaxia Info’s Vitals ESP (≤ 6.3)
TWCERT/CC published a Taiwan Vulnerability Note (TVN-202603007) describing two high-severity vulnerabilities affecting Galaxia Information’s Vitals ESP up to and including version 6.3. One issue could allow an authenticated remote attacker to perform some admin functions and escalate privileges (CVE-2026-4639, CVSS 8.8). The other could allow an unauthenticated remote attacker to access some functions and obtain sensitive information (CVE-2026-4640, CVSS 7.5). TWCERT/CC advises customers to contact the vendor for a patch.
Adobe Issues May Security Updates for 52 Vulnerabilities, Prioritizes Commerce Platforms
Adobe released its May routine security updates addressing 52 vulnerabilities across 10 application systems, with a particular emphasis on critical patches for the Adobe Commerce (Magento) e-commerce platform and high-risk flaws in Adobe Connect.