Answer in brief
CVE-2026-17011 records a Unknown severity vulnerability in Nexter Blocks < 5.0.2 - Contributor+ Stored CSS Injection. The current sources do not mark it as known exploited. The current feed maps Unknown/Nexter Blocks (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Unknown/Nexter Blocks (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Unknown/Nexter Blocksgeneric | >=0 <5.0.2 | 5.0.2 |
Published upstream
Aug 9, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 9, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 9, 2026
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.
Quoted source text, attributed separately from HOL analysis.
Answer in brief
CVE-2026-17011 records a Unknown severity vulnerability in Nexter Blocks < 5.0.2 - Contributor+ Stored CSS Injection. The current sources do not mark it as known exploited. The current feed maps Unknown/Nexter Blocks (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Unknown/Nexter Blocks (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Unknown/Nexter Blocksgeneric | >=0 <5.0.2 | 5.0.2 |
Published upstream
Aug 9, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 9, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 9, 2026
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.
Quoted source text, attributed separately from HOL analysis.