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THREAT OPS › Threat News › [NVD] CVE-2026-17011 — 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,

[NVD] CVE-2026-17011 — 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,

mednvdPublished 2026-08-09

CVE-2026-17011 CVSS: None Published: 2026-08-09T06:18:10.180

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.

MITRE ATT&CK techniques

DefacementT1491

Indicators of compromise

CVE-2026-17011cve

Original source: https://nvd.nist.gov/vuln/detail/CVE-2026-17011