CVE-2026-54221 Details
Description
UBB.threads is vulnerable to Reflected XSS. The application improperly handles user input in certain requests, enabling attackers to execute arbitrary JavaScript in the context of a victim's browser by tricking them into clicking a crafted link. Because vendor contact attempts were unsuccessful, the vulnerability has only been confirmed in version 7.7.5 but may also affect other versions.
A reflected cross-site scripting vulnerability has been identified in UBB.threads version 7.7.5, with the potential to affect other versions. This vulnerability arises from improper handling of user input in certain requests, allowing attackers to execute arbitrary JavaScript in the context of the victim's browser. Exploitation involves tricking the victim into clicking a crafted link.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Jun 18, 2026CISA-ADP
Assessed Jun 18, 2026References to Advisories, Solutions, and Tools
By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.
| URL | Source(s) | Tag(s) |
|---|---|---|
| https://cert.pl/en/posts/2026/06/CVE-2026-54219 | [email protected] | AdvisoryBundleRemedy |
| https://www.ubbcentral.com/ | [email protected] | Content WallVendor |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-79 | Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| UBB Systems UBB.threads | <= 7.7.5 (semver) |
CPE
Remediation
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Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 18, 2026 | New CVE Received | [email protected] |
| Jun 18, 2026 | CVE Modified | CISA-ADP |