CVE-2026-54219 Details
Description
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.
A stored cross-site scripting vulnerability has been identified in UBB.threads version 7.7.5, allowing low-privileged attackers to inject arbitrary JavaScript into user posts and profile fields. The application does not adequately sanitize user input, enabling the injected scripts to execute in the browsers of users who view the affected content.
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 |