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CVE-2026-121874— Post Duplicator < 3.0.18 - Admin+ Arbitrary Option Update via Unvalidated Option Name

Quick assessment

Affected
Unknown Post Duplicator
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.

Post Duplicator WordPress 插件在 3.0.18 版本之前未将设置保存操作限制在其自身的选项范围内，这使得多站点网络中非超级管理员的站点管理员能够覆盖其站点的任意选项，包括角色定义，从而为自己授予网络管理权限。

AI Predicted 8.1 Difficulty: Easy

Possible ATT&CK Techniques 1 AI

T1068 · Exploitation for Privilege Escalation
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I. Basic Information for CVE-2026-121874

Vulnerability Information
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Vulnerability Title
Post Duplicator < 3.0.18 - Admin+ Arbitrary Option Update via Unvalidated Option Name
Source: CVE Program / CVE List V5
Vulnerability Description
The Post Duplicator WordPress plugin before 3.0.18 does not restrict settings saves to its own options, allowing a site administrator on a multisite network who is not a Super Admin to overwrite arbitrary options of their site, including the role definitions, and so grant themselves network-management capabilities.
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 Post Duplicator 0 ~ 3.0.18 -

II. Public POCs for CVE-2026-121874

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III. Intelligence Information for CVE-2026-121874

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Other References for CVE-2026-121874 (1)

Same Patch Batch · Unknown · 2026-11-09 · 23 CVEs total

CVE-2026-115252 10.0 CRITICAL Confection 0.4.0 - 0.4.7 - Unauthenticated RCE via Write Key Option
CVE-2026-106466 7.5 HIGH JWT Auth <= 3.0.2 - Unauthenticated Account Access Persistence via Insufficient Refresh To
CVE-2026-106008 5.3 MEDIUM FraudLabs Pro SMS Verification 1.11.2 - 1.12.1 - Unauthenticated SMS Verification Bypass v
CVE-2026-115204 AZEXO Store Locator <= 1.4 - Subscriber+ Arbitrary File Write via azt_items_import
CVE-2026-115237 Grand Job <= 1.2.1 - Unauthenticated Account Takeover via Empty Password Reset Code
CVE-2026-115213 EASY-JS-WPAPI <= 2.0 - Unauthenticated Administrator Password Disclosure and Authenticatio
CVE-2026-115212 mView <= 1.0.3 - Subscriber+ Arbitrary File Upload
CVE-2026-115256 Mail Debug for WooCommerce <= 1.3.0 - Unauthenticated Sent Email Disclosure Leading to Acc
CVE-2026-120409 All-in-One Video Gallery < 5.1.1 - Unauthenticated Password-Protected Video Disclosure via
CVE-2026-118201 Limit Login Attempts Reloaded 3.0.0 - 3.4.0 - Two-Factor Authentication Bypass via XML-RPC
CVE-2026-118202 Limit Login Attempts Reloaded < 3.4.1 - Two-Factor Authentication Bypass via Malformed X-F
CVE-2026-121759 Fusion Page Builder < 1.7.1 - Contributor+ Arbitrary Post Trashing via IDOR
CVE-2026-123091 Vigilant < 2.11.0 - 2FA Bypass via Third-Party Login Forms
CVE-2026-123064 WP BASE Booking of Appointments, Services and Events 6.5.0 - Subscriber+ Privilege Escalat
CVE-2026-123088 UniPAY Payment Gateway For WooCommerce < 2.4 - Unauthenticated Order Key and Customer PII
CVE-2026-123128 GemBooking < 1.7.1 - Unauthenticated Team Member Double-Booking via Cross-Object Race Cond
CVE-2026-121875 Post Duplicator < 3.0.18 - Admin+ Privilege Escalation via Unvalidated Capability Assignme
CVE-2026-81422 Advanced Appointment Booking & Scheduling < 2.7 - Unauthenticated Arbitrary User Registrat
CVE-2026-123129 Event Tickets Manager for WooCommerce 1.5.4 - 1.5.9 - Unauthenticated Site-wide Event Tick
CVE-2026-123131 GemBooking < 1.7.1 - Staff+ Arbitrary Post Deletion and Site Settings Update via REST Cont

Showing top 20 of 23 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Post Duplicator
Same vendor: Unknown