CVE-2026-17522— Newsletters < 4.17 - Arbitrary Plugin Option Update via CSRF
Quick assessment
Affected
Unknown Newsletters
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.
4.17 及更早版本的 Newsletters WordPress 插件在保存其设置页面时，未执行任何 nonce 或权限（capability）检查，并将所有提交的参数写入其自身的选项设置中。这使得攻击者可以通过跨站请求伪造（CSRF）攻击，诱导已登录的管理员覆盖 Newsletters WordPress 插件（4.17 之前版本）的任意设置，包括保护其 API 的凭据。
Possible ATT&CK Techniques 1 AI
T1189 · Drive-by Compromise
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I. Basic Information for CVE-2026-17522
Vulnerability Information
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Vulnerability Title
Newsletters < 4.17 - Arbitrary Plugin Option Update via CSRF
Source: CVE Program / CVE List V5
Vulnerability Description
The Newsletters WordPress plugin before 4.17 does not perform any nonce or capability check when saving one of its settings screens, and writes every submitted parameter into its own options, allowing attackers to make a logged in administrator overwrite arbitrary Newsletters WordPress plugin before 4.17 settings, including the credential protecting its API, via a Cross-Site Request Forgery attack.
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
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Unknown | Newsletters | 0 ~ 4.17 | - |
|
II. Public POCs for CVE-2026-17522
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
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Security Blog Posts for CVE-2026-17522 (1)
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🔗 Newsletters < 4.17 – Arbitrary Plugin Option Update via CSRF | CVE 2026-17522 | Plugin Vulnerabilities exploit vdb-entry technical-description
Same Patch Batch · Unknown · 2026-08-29 · 26 CVEs total
| CVE-2026-76586 | BookingPress 1.5.6 - 1.6.2 - Unauthenticated Booking Price Manipulation via PayPal Payment | |
| CVE-2026-10522 | Simple User Registration <= 6.9 - Unauthenticated Privilege Escalation to Administrator | |
| CVE-2026-16061 | Rest Routes <= 5.5.5 - Unauthenticated SQLi via custom-tables/tables/{table_name} | |
| CVE-2026-16947 | Total Processing Card Payments for WooCommerce <= 7.3 - Unauthenticated SSRF leading to Pa | |
| CVE-2026-16600 | SmartAIPress <= 1.2.0 - Subscriber+ Server-Side Request Forgery via smartaipress_openai_up | |
| CVE-2026-16259 | Uix UserCenter <= 1.0.3 - Unauthenticated Privilege Escalation | |
| CVE-2026-17520 | Newsletters < 4.17 - Unauthenticated API Access via Predictable API Key | |
| CVE-2026-76546 | Profile Builder < 4.0.1 - Contributor+ Stored XSS via Format Date Shortcode | |
| CVE-2026-19430 | CatFolders Document Gallery Pro < 2.0.7 - Unauthenticated Missing Authorization via downlo | |
| CVE-2026-18234 | MStore API < 4.21.1 - Subscriber+ Arbitrary Order Payment Bypass via Wallet | |
| CVE-2026-18233 | MStore API < 4.21.1 - Subscriber+ Arbitrary Order Completion | |
| CVE-2026-76547 | Profile Builder < 4.0.1 - Admin+ PHP Object Injection via Import/Export | |
| CVE-2026-76548 | Profile Builder < 4.0.1 - Unauthenticated Unpublished Content and Media Modification via F | |
| CVE-2026-81026 | MasterStudy LMS < 3.7.40 - Unauthenticated Payment Bypass via PayPal IPN | |
| CVE-2026-77010 | HEL Online Classroom: AI-powered Online Classrooms <= 1.0.3 - Unauthenticated Moderator Jo | |
| CVE-2026-77012 | Icollect <= 1.0.0 - Unauthenticated Arbitrary File Read, SSRF and Path Traversal File Writ | |
| CVE-2026-77008 | HEL Online Classroom: AI-powered Online Classrooms <= 1.0.3 - Unauthenticated Plugin Setti | |
| CVE-2026-77007 | HEL Online Classroom: AI-powered Online Classrooms <= 1.0.3 - Unauthenticated BigBlueButto | |
| CVE-2026-80311 | Stripe Payment Forms by WP Full Pay < 8.5.5 - Cross-Customer Subscription Cancellation via | |
| CVE-2026-80488 | WP Ultimate CSV Importer < 9.0 - Admin+ SQLi via AIOSEO Import Fields |
Showing top 20 of 26 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
Same product: Newsletters
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CVE-2026-17520
Newsletters < 4.17 - Unauthenticated API Access via Predicta -
CVE-2026-75908
Newsletters <= 4.17 - Missing Authorization to Authenticated -
CVE-2026-16267
Newsletters < 4.16 - Unauthenticated PHP Object Injection vi -
CVE-2026-16269
Newsletters < 4.16 - Unauthenticated API Authentication Bypa -
CVE-2026-16268
Newsletters < 4.16 - Unauthenticated Server-Side Request For
Same vendor: Unknown
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CVE-2026-81026
MasterStudy LMS < 3.7.40 - Unauthenticated Payment Bypass vi -
CVE-2026-81346
Frontend Admin by DynamiApps < 3.29.11 - Subscriber+ Arbitra -
CVE-2026-81342
MasterStudy LMS < 3.7.43 - Unauthenticated Open Redirect -
CVE-2026-81200
MasterStudy LMS < 3.7.42 - Instructor+ Cross-Tenant Order Bi -
CVE-2026-77786
Rank Math SEO < 1.0.277 - Editor+ Core Settings Modification
V. Comments for CVE-2026-17522
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