Nexter Blocks < 5.0.2 - Contributor+ Stored CSS Injection

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-17011
StatePUBLISHED
AssignerWPScan
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-08-09 06:18:10 UTC
Updated2026-08-09 06:18:10 UTC
DescriptionThe Nexter Blocks WordPress plugin before 5.0.2 does not restrict who can save global CSS through one of its REST endpoints, allowing users with at least the Contributor role to store arbitrary CSS that is rendered site-wide on the front end, enabling defacement, content hiding, and UI redressing.

Risk And Classification

EPSS: 0.000970000 probability, percentile 0.008440000 (date 2026-08-09)

Problem Types: CWE-345 Insufficient Verification of Data Authenticity

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Unknown Nexter Blocks affected 5.0.2 semver Not specified

References

ReferenceSourceLinkTags
wpscan.com/vulnerability/a702e5cb-0fb3-419e-81df-fa5b26c81402 [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: Vaibhav Narkhede (en)

CNA: WPScan (en)

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