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.
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.