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CVE-2026-80072— User Registration & Membership < 5.2.8 - Unauthenticated Open Redirect via Login Redirect Parameters

Quick assessment

Affected
Unknown User Registration & Membership
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.

在 5.2.8 版本之前的 User Registration & Membership WordPress 插件在重定向到登录后的跳转目标时未对其进行校验，导致未经身份验证的攻击者可以将访客重定向到任意外部 URL，从而可能被利用来进行钓鱼攻击。

AI Predicted 5.6 Difficulty: Trivial

Possible ATT&CK Techniques 1 AI

T1134 · Access Token Manipulation
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I. Basic Information for CVE-2026-80072

Vulnerability Information
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Vulnerability Title
User Registration & Membership < 5.2.8 - Unauthenticated Open Redirect via Login Redirect Parameters
Source: CVE Program / CVE List V5
Vulnerability Description
The User Registration & Membership WordPress plugin before 5.2.8 does not validate the destination of a post-login redirect before redirecting, allowing unauthenticated attackers to redirect visitors to an arbitrary external URL, which can be abused for phishing.
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 User Registration & Membership 0 ~ 5.2.8 -

II. Public POCs for CVE-2026-80072

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III. Intelligence Information for CVE-2026-80072

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Other References for CVE-2026-80072 (1)

Same Patch Batch · Unknown · 2026-09-13 · 9 CVEs total

CVE-2026-89080 Really Simple Security < 9.8.1 - Unauthenticated 2FA Bypass via Email Provider State Demot
CVE-2026-86407 User Registration & Membership < 5.2.8 - Unauthenticated User Data Disclosure via Membersh
CVE-2026-88764 Simple Membership < 4.7.8 - Subscriber+ Membership Level Escalation via PayPal Standard su
CVE-2026-88912 rtMedia for WordPress, BuddyPress and bbPress < 4.7.12 - Subscriber+ Arbitrary Activity Pr
CVE-2026-88995 Bookit < 2.6.0.1 - Unauthenticated Appointment PII Disclosure via Availability Check
CVE-2026-77773 Social Contact Form (FormyChat) < 2.15.8 - Unauthenticated Gravity Forms Entry Disclosure
CVE-2026-86406 User Registration & Membership < 5.2.8 - Subscriber+ Privilege Escalation via Membership P
CVE-2026-80071 User Registration & Membership < 5.2.8 - Author+ Privilege Escalation to Administrator

IV. Related Vulnerabilities

Same product: User Registration & Membership
Same vendor: Unknown

V. Comments for CVE-2026-80072

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