CVE-2026-84899
VikWidgetsLoader < 1.12.0 - Contributor+ Stored XSS via Gutenberg Block class_suffix
- State
- Published
- Severity
- 6.8 Medium
- Published
- Sep 5, 2026
- Updated
- Sep 6, 2026
- Reserved
- Sep 2, 2026
Description
The VikWidgetsLoader WordPress plugin before 1.12.0 does not sanitise or escape a block attribute before outputting it inside an inline script, allowing users with the Contributor role to store arbitrary JavaScript that executes in the browser of any user viewing the affected post, including the administrator who reviews the pending submission.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 6.8 Medium | CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H | CISA-ADP |
Weaknesses
- CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Affected Products
| Product | Versions |
|---|---|
VikWidgetsLoaderUnknown |
|
References
- https://wpscan.com/vulnerability/4e0beb72-d73b-4802-894d-141aadbd8d4f/exploitvdb-entrytechnical-description
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