CVE-2026-54224— Denial of Service in UBB.threads
Possible ATT&CK Techniques 1AI
T1499 · Endpoint Denial of ServiceAffected Version Matrix 1
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| UBB Systems | UBB.threads | ≤ 7.7.5 | affected |
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I. Basic Information for CVE-2026-54224
Vulnerability Information
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Vulnerability Title
Denial of Service in UBB.threads
Source: CVE Program / CVE List V5
Vulnerability Description
UBB.threads is vulnerable to Denial of Service (DoS). By sending multiple concurrent requests to view any user profile on instances with many registered users, an authenticated attacker can easily exhaust database resources and completely deny access to the application for other users. Because vendor contact attempts were unsuccessful, the vulnerability has only been confirmed in version 7.7.5 but may also affect other versions.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
不对称的资源消耗(放大攻击)
Source: CVE Program / CVE List V5
Vulnerability Title
UBB Systems UBB.threads 资源管理错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
UBB Systems UBB.threads是UBB Systems社区的一个论坛软件系统。 UBB Systems UBB.threads 7.7.5及之前版本存在资源管理错误漏洞，该漏洞源于资源管理错误，可能导致经过身份验证的攻击者通过发送多个并发请求查看用户配置文件，轻松耗尽数据库资源，完全拒绝其他用户访问应用程序。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| UBB Systems | UBB.threads | 0 ~ 7.7.5 | - |
II. Public POCs for CVE-2026-54224
| # | POC Description | Source Link | Shenlong Link |
|---|
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Security Blog Posts for CVE-2026-54224 (1)
- 🔗 Vulnerabilities in UBB.threads software | CERT Polskathird-party-advisory
Same Patch Batch · UBB Systems · 2026-06-18 · 6 CVEs total
| CVE-2026-54221 | Reflected XSS in UBB.threads | |
| CVE-2026-54222 | Blind SQL Injection in UBB.threads | |
| CVE-2026-54219 | Stored XSS in UBB.threads | |
| CVE-2026-54223 | Remote Code Execution via arbitrary file read and write in UBB.threads | |
| CVE-2026-54220 | Cross-Site Request Forgery in UBB.threads |
IV. Related Vulnerabilities
Same weakness: CWE-405
- CVE-2026-47774
Envoy vulnerable to HTTP/2 memory exhaustion via cookie head - CVE-2026-8594
Text::LineFold versions through 2019.001 for Perl duplicate - CVE-2026-45557
Technitium DNS Server excessive DNSSEC requests - CVE-2026-35665
OpenClaw < 2026.3.24 - Denial of Service via Feishu Webhook - CVE-2026-35626
OpenClaw < 2026.3.22 - Unauthenticated Resource Exhaustion v
V. Comments for CVE-2026-54224
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