CVE-2026-54223— Remote Code Execution via arbitrary file read and write in UBB.threads
Possible ATT&CK Techniques 2AI
T1059 · Command and Scripting Interpreter T1190 · Exploit Public-Facing ApplicationAffected Version Matrix 1
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| UBB Systems | UBB.threads | ≤ 7.7.5 | affected |
Get alerts for future matching vulnerabilitiesLog in to subscribe
I. Basic Information for CVE-2026-54223
Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗ Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.
Vulnerability Title
Remote Code Execution via arbitrary file read and write in UBB.threads
Source: NVD (National Vulnerability Database)
Vulnerability Description
UBB.threads is vulnerable to Path traversal, allowing attackers with privilege to edit templates to read and write any file on the application’s server that application has privileges to, what results in Remote Code Execution. Because vendor contact attempts were unsuccessful, the vulnerability has only been confirmed in version 7.7.5 but may also affect other versions.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
对路径名的限制不恰当(路径遍历)
Source: NVD (National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| UBB Systems | UBB.threads | 0 ~ 7.7.5 | - |
II. Public POCs for CVE-2026-54223
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POCPremium
No public POC found.
Login to generate AI POCIII. Intelligence Information for CVE-2026-54223
请登录查看更多情报信息。
Security Blog Posts for CVE-2026-54223 (1)
- 🔗 Vulnerabilities in UBB.threads software | CERT Polskathird-party-advisory
Same Patch Batch · UBB Systems · 2026-06-18 · 6 CVEs total
| CVE-2026-54224 | Denial of Service in UBB.threads | |
| 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-2026-54220 | Cross-Site Request Forgery in UBB.threads |
IV. Related Vulnerabilities
Same weakness: CWE-22
- CVE-2026-54557
mise HTTP backend uses raw version path for install symlink - CVE-2026-56876
extract-zip unvalidated symlink path traversal - CVE-2026-55677
Echo: Encoded slash (%2F) bypasses route-level protection an - CVE-2026-57321
WordPress H5P plugin <= 1.17.7 - Arbitrary File Deletion vul - CVE-2026-56066
WordPress ShortPixel Adaptive Images plugin <= 3.11.4 - Arbi
V. Comments for CVE-2026-54223
No comments yet