CVE-2026-54223
HighCVSS 8.6Exploitation Probability (EPSS)
Low risk45th percentile - higher than 45% of all known CVEs
Summary
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, resulting in Remote Code Execution.
Risk Assessment
Attackers can exploit this vulnerability to gain full control over the application server, posing a serious security threat to the organization.
Recommendation
It is recommended to update to the latest version of UBB.threads and restrict template editing privileges to trusted users.
Other vulnerabilities in UBB.threads
See all- CVE-2026-54224High
UBB.threads is vulnerable to Denial of Service (DoS). An authenticated attacker can send multiple concurrent requests to view any user profile, leading to exhaustion of database resources and complete denial of access to the application for other users.
- CVE-2026-54222High
UBB.threads is vulnerable to Blind SQL Injection, allowing attackers with access to the Members in Control Panel to interact with the underlying database. Due to insufficient input sanitization, an attacker can extract sensitive information, such as user credentials.
- CVE-2026-54221Medium
UBB.threads is vulnerable to Reflected XSS. The application improperly handles user input in certain requests, allowing attackers to execute arbitrary JavaScript in the context of a victim's browser.
- CVE-2026-54220High
uBB.threads is vulnerable to a Cross-Site Request Forgery (CSRF) due to a lack of protective mechanisms. This allows an attacker to trick an authenticated user into executing unintended actions.
- CVE-2026-54219Medium
UBB.threads is vulnerable to Stored XSS via user posts and user profile fields. The application fails to properly sanitize user input, allowing low privileged attackers to inject arbitrary JavaScript that executes in a victim's browser upon viewing.
Original NVD description (English source)
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.