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CVE-2026-19223— Smush < 4.3.2 - Admin+ Network-Wide RCE via Hub Connector on Multisite

Quick assessment

Affected
Unknown Smush
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 插件 Smush 在 4.3.2 之前的版本中未将一项网络级设置限制为仅网络管理员可操作，导致多站点网络中任意单个站点的管理员能够在整个网络范围内执行任意代码。

AI Predicted 9.8 Difficulty: Easy

Possible ATT&CK Techniques 1 AI

T1068 · Exploitation for Privilege Escalation
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I. Basic Information for CVE-2026-19223

Vulnerability Information
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Vulnerability Title
Smush < 4.3.2 - Admin+ Network-Wide RCE via Hub Connector on Multisite
Source: CVE Program / CVE List V5
Vulnerability Description
The Smush WordPress plugin before 4.3.2 does not restrict a network-wide setting to network administrators, allowing an administrator of any single site on a multisite network to execute arbitrary code across the entire network.
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 Smush 3.22.1 ~ 4.3.2 -

II. Public POCs for CVE-2026-19223

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III. Intelligence Information for CVE-2026-19223

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Security Blog Posts for CVE-2026-19223 (1)

Same Patch Batch · Unknown · 2026-08-27 · 19 CVEs total

CVE-2026-19715 WP OAuth Server < 6.3.1 - Unauthenticated OAuth Token and User Data Disclosure via Debug L
CVE-2026-13414 CMP - Coming Soon & Maintenance < 4.1.18 - Unauthenticated Maintenance Mode Disable via cm
CVE-2026-13415 CMP - Coming Soon & Maintenance < 4.1.18 - Editor+ Privilege Escalation via cmp_ajax_impor
CVE-2026-13416 CMP - Coming Soon & Maintenance < 4.1.18 - Editor+ Stored XSS via niteoCS_socialmedia
CVE-2026-16569 ShopApper <= 0.4.62 - Subscriber+ Arbitrary Product Stock Update
CVE-2026-16568 ShopApper <= 0.4.62 - Subscriber+ Customer Data Disclosure via IDOR
CVE-2026-16567 Document Embedder < 2.3.1 - Unauthenticated Private Document Download via Token Oracle
CVE-2026-19225 Defender Security < 6.2.0 - Admin+ Network-Wide RCE via Hub Connector on Multisite
CVE-2026-19454 JetBackup 3.1.18.8 - 3.1.23.3 - Admin+ Multisite Network Backup Download
CVE-2026-78137 StoreGrowth: Smart Sales Booster for WooCommerce < 2.1.2 - Unauthenticated Arbitrary Price
CVE-2026-76549 UpdraftPlus < 1.26.7 - Backup Restoration via CSRF
CVE-2026-78125 LearnPress – Sepay Payment < 4.0.3 - Unauthenticated Order Status Disclosure
CVE-2026-77017 Workeera Remote Tech Job Board < 1.0.6 - Subscriber+ Arbitrary File Read via Candidate Pro
CVE-2026-77016 Workeera Remote Tech Job Board < 1.0.6 - Subscriber+ Arbitrary File Deletion via Candidate
CVE-2026-77018 Workeera Remote Tech Job Board < 1.0.6 - Subscriber+ Arbitrary File Upload via Candidate P
CVE-2026-78333 12 Step Meeting List 3.17 - 3.19.16 - Unauthenticated Stored XSS via Geocode Event Log
CVE-2026-78138 Finale Lite < 2.21.0 - Subscriber+ Campaign Configuration Disclosure via wcct_quick_view_h
CVE-2026-78139 Notifima < 3.1.4 - Subscriber+ Stock Alert Unsubscription via IDOR

IV. Related Vulnerabilities

Same vendor: Unknown

V. Comments for CVE-2026-19223

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