Description
The 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.
References1
Metrics
- CVSS 3.1
-
3.8
LOW
Score source: CNA
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:L - EPSS — exploit probability
- 0% percentile: 6 · as of 12 November 2026
- CWE
- CWE-345
Could this be exploited in your environment?
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