Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2026-16264— Newsletters < 4.18.1 - Unauthenticated Subscriber Record Overwrite and PII Disclosure via IDOR

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.

WordPress 的 Newsletters 插件（4.18.1 版本之前）在对某些订阅者管理操作时未执行所有权检查，并且会根据请求向未认证的访问者颁发管理会话，导致攻击者可以读取任何订阅者的个人数据，并覆盖任何订阅者的记录，包括其电子邮件地址。

AI Predicted 9.8 Difficulty: Trivial EPSS 0.19% · P8

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 1

VendorProduct Version RangeStatus
Unknown Newsletters < 4.18.1 affected
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-16264

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
Newsletters < 4.18.1 - Unauthenticated Subscriber Record Overwrite and PII Disclosure via IDOR
Source: CVE Program / CVE List V5
Vulnerability Description
The Newsletters WordPress plugin before 4.18.1 does not perform an ownership check on some of its subscriber management actions, and issues a management session to unauthenticated visitors on request, allowing attackers to read any subscriber's personal data and overwrite any subscriber's record including their email address.
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 ~ 4.18.1 -

II. Public POCs for CVE-2026-16264

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-16264

请登录查看更多情报信息。

Other References for CVE-2026-16264 (1)

Same Patch Batch · Unknown · 2026-09-23 · 57 CVEs total

CVE-2026-86601 6.5 MEDIUM WP Recipe Maker < 10.8.2 - Unauthenticated Arbitrary Shortcode Execution via Comment Conte
CVE-2026-86612 5.6 MEDIUM Ninja Tables < 5.2.17 - Unauthenticated Arbitrary Shortcode Execution via Fluent Forms Dat
CVE-2026-84091 5.3 MEDIUM SUMIT Payment Gateway for WooCommerce < 4.0.0 - Unauthenticated Payment Confirmation Forge
CVE-2026-90950 5.3 MEDIUM Paid Member Subscriptions < 3.1.0 - Unauthenticated reCAPTCHA Bypass via Registration Form
CVE-2026-87978 5.3 MEDIUM Paymob for WooCommerce < 4.1.14 - Unauthenticated Payment Bypass via Unverified Subscripti
CVE-2026-87071 5.3 MEDIUM Forminator Forms < 1.57.2.1 - Unauthenticated Post Meta Injection on Submitted Posts
CVE-2026-87070 5.3 MEDIUM Forminator Forms < 1.57.2.1 - Unauthenticated Poll Vote Limit Bypass via IP Spoofing
CVE-2026-86604 4.8 MEDIUM GTranslate < 5.0.1 - Unauthenticated Arbitrary Shortcode Execution via Email Translation
CVE-2026-87848 3.7 LOW MPCX Lightbox 1.2.2 - 1.2.5 - Unauthenticated Non-Public Post Content Disclosure
CVE-2026-93511 Premium Packages < 7.2.1 - Unauthenticated PayPal Webhook Signature Verification Bypass
CVE-2026-87069 Forminator Forms < 1.57.2.1 - Subscriber+ Form Stripe Field Migration via migrate_stripe
CVE-2026-90985 WPC Smart Compare for WooCommerce < 6.6.1 - Unauthenticated Password-Protected Product Des
CVE-2026-91024 Booking Manager < 2.1.21 - Author+ SQLi via ICS Import Feed UID (sync_gid)
CVE-2026-89331 FluentBoards 1.95 - 2.0.15 - Unauthenticated Board Member Email Address Disclosure via Pub
CVE-2026-88997 JSM Show Post Metadata < 4.9.1 - Contributor+ Stored XSS via Custom Field Meta Key
CVE-2026-87981 Paymob for WooCommerce < 4.1.14 - Contributor+ Payment Gateway Configuration Deletion and
CVE-2026-87074 Forminator Forms < 1.57.2.1 - Unauthenticated Arbitrary Recipient Email Sending with Attac
CVE-2026-87979 Paymob for WooCommerce < 4.1.14 - Unauthenticated Saved Card Token Write to Any User via W
CVE-2026-88929 Sale Booster 7.0.0 - 7.5.1 - Unauthenticated Non-Public Product Disclosure
CVE-2026-86842 Real3D Flipbook Lite < 5.4 - Author+ Content Deletion and Stored XSS via Global Settings O

Showing top 20 of 57 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Newsletters
Same vendor: Unknown

V. Comments for CVE-2026-16264

No comments yet

Leave a comment