PT-2026-50668 · Ubb Systems · Ubb.Threads

Kamil Szczurowski + 1 · Published 2026-06-18 · Updated 2026-06-18 · CVE-2026-54219

Mitre

CVSS v4.0

5.1

Medium

Base vector

AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:L/VA:N/SC:L/SI:L/SA:N

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.

Because vendor contact attempts were unsuccessful, the vulnerability has only been confirmed in version 7.7.5 but may also affect other versions.

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2026-54219

Affected Products

Ubb.Threads

References · 3

• https://nvd.nist.gov/vuln/detail/CVE-2026-54219 · Security Note
• https://ubbcentral.com · Note
• https://cert.pl/en/posts/2026/06/CVE-2026-54219 · Note