Master Blocks 1.4.1 - 1.4.1.4 - Unauthenticated Stored XSS via White Label Settings

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-88824
StatePUBLISHED
AssignerWPScan
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-09-19 07:16:33 UTC
Updated2026-09-19 07:16:33 UTC
DescriptionThe 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.

Risk And Classification

Problem Types: CWE-79 Cross-Site Scripting (XSS)

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Unknown Master Blocks affected 1.4.1 1.5.0 semver Not specified

References

ReferenceSourceLinkTags
wpscan.com/vulnerability/898fda0a-4d27-4def-ae6f-35bf25a8ae8d [email protected] wpscan.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: Enrico Marcolini - Claudio Marchesini - Dottor Marc (en)

CNA: WPScan (en)

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