CVE-2026-54223CWE-22

Remote Code Execution via arbitrary file read and write in UBB.threads

High · published June 18, 2026

CVSS v4.0
8.6
EPSS
1%
Percentile
55.3
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v4.0
8.6 · HIGH
Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:L/SI:L/SA:L
EPSS
0.00775 · 55.3th percentile
Weakness
CWE-22 · Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Published
2026-06-18T12:56Z
EPSS history
Timeline
  • 18 JUN 12:56Z
    Remote Code Execution via arbitrary file read and write in UBB.threads
    cvelistv5