CVE-2026-17011— Nexter Blocks < 5.0.2 - Contributor+ Stored CSS Injection
Quick assessment
Affected
Unknown Nexter Blocks
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
WordPress Nexter Blocks是WordPress基金会开源的一款网站页面构建组件。 WordPress Nexter Blocks 5.0.2之前版本存在输入验证错误漏洞，该漏洞源于未限制用户通过其REST端点保存全局CSS，允许至少具有Contributor角色的用户存储任意CSS，并渲染至前端，导致网站篡改、内容隐藏和界面伪装。
Affected Version Matrix 1
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Unknown | Nexter Blocks | < 5.0.2 |
affected |
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I. Basic Information for CVE-2026-17011
Vulnerability Information
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Vulnerability Title
Nexter Blocks < 5.0.2 - Contributor+ Stored CSS Injection
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
WordPress Nexter Blocks 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
WordPress Nexter Blocks是WordPress基金会开源的一款网站页面构建组件。 WordPress Nexter Blocks 5.0.2之前版本存在输入验证错误漏洞，该漏洞源于未限制用户通过其REST端点保存全局CSS，允许至少具有Contributor角色的用户存储任意CSS，并渲染至前端，导致网站篡改、内容隐藏和界面伪装。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Unknown | Nexter Blocks | 0 ~ 5.0.2 | - |
|
II. Public POCs for CVE-2026-17011
| # | POC Description | Source Link | Shenlong Link |
|---|
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Vendor Advisories for CVE-2026-17011 (1)
-
🔗 Nexter Blocks < 5.0.2 – Contributor+ Stored CSS Injection | CVE 2026-17011 | Plugin Vulnerabilities Read full article exploit vdb-entry technical-description
Same Patch Batch · Unknown · 2026-08-09 · 17 CVEs total
| CVE-2026-15038 | InfiniteWP Client < 1.13.6 - Unauthenticated Administrator Account Takeover on Multisite | |
| CVE-2026-16032 | LWS Optimize < 4.1.2 - Unauthenticated Stored XSS via Real User Monitoring | |
| CVE-2026-18473 | WP Directory Kit < 1.5.5 - Unauthenticated SQL Injection via 'field_search' Parameter | |
| CVE-2026-18603 | Cancel Order & Request Woocommerce < 1.3.4.34 - Unauthenticated Order Content Disclosure v | |
| CVE-2026-18465 | WP Maps Pro < 6.1.3 - Unauthenticated Local File Inclusion | |
| CVE-2026-17017 | CubeWP Framework < 1.1.31 - Subscriber+ SQL Injection via cubewp_remove_relation | |
| CVE-2026-18357 | WPC Order Tip for WooCommerce < 3.3.1 - Unauthenticated Order Data Disclosure | |
| CVE-2026-18464 | WP Maps Pro < 6.1.3 - Unauthenticated Denial of Service | |
| CVE-2026-18037 | Create by Mediavine < 2.5.4 - Unauthenticated Unpublished Content Disclosure and Publicati | |
| CVE-2026-18032 | WP Data Access < 5.5.79 - Unauthenticated Sensitive Data Disclosure via Autocomplete Colum | |
| CVE-2026-17044 | WordPress File Upload < 5.1.8 - Unauthenticated SQL Injection via uniqueuploadid | |
| CVE-2026-17014 | WP Photo Album Plus < 9.2.07.002 - Unauthenticated Export ZIP File Deletion via delexportz | |
| CVE-2026-16965 | Solace Extra < 1.6.1 - Subscriber+ Post Meta Update via solace_update_sitebuilder_status | |
| CVE-2026-16988 | GeoDirectory < 2.8.169 - Unauthenticated Pending/Draft Listing Disclosure via markers REST | |
| CVE-2026-16992 | Create by Mediavine < 2.5.4 - Unauthenticated Unpublished Content Disclosure and Publicati | |
| CVE-2026-16957 | Slim SEO < 4.9.11 - Contributor+ Arbitrary Post Meta Disclosure |
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V. Comments for CVE-2026-17011
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