CVE-2026-88824
Master Blocks 1.4.1 - 1.4.1.4 - Unauthenticated Stored XSS via White Label Settings
- State
- Published
- Severity
- 8.8 High
- Published
- Sep 19, 2026
- Updated
- Sep 19, 2026
- Reserved
- Sep 10, 2026
Description
The Master Blocks WordPress plugin before 1.5.0 does not have authorisation on one of its REST routes, allowing unauthenticated users to update its settings, including a value that is output unescaped in the admin area, leading to Stored XSS that executes in the session of any administrator visiting a wp-admin page.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 8.8 High | CVSS:3.1/AV:N/AC:L/PR:N/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 |
|---|---|
Master BlocksUnknown |
|
References
- https://wpscan.com/vulnerability/898fda0a-4d27-4def-ae6f-35bf25a8ae8d/exploitvdb-entrytechnical-description
Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.