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CVE-2026-19454— JetBackup 3.1.18.8 - 3.1.23.3 - Admin+ Multisite Network Backup Download

Quick assessment

Affected
Unknown JetBackup
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.

JetBackup WordPress 插件在 3.1.23.5 版本之前，在提供备份归档文件和任务日志时，未执行其多站点（multisite）授权检查，使得网络主站的管理员（非超级管理员）能够下载整个网络的完整备份，包括所有站点的数据以及共享的 webroot。

AI Predicted 5.5 Difficulty: Easy
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I. Basic Information for CVE-2026-19454

Vulnerability Information
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Vulnerability Title
JetBackup 3.1.18.8 - 3.1.23.3 - Admin+ Multisite Network Backup Download
Source: CVE Program / CVE List V5
Vulnerability Description
The JetBackup WordPress plugin before 3.1.23.5 does not perform its multisite authorisation check before serving backup archives and job logs, allowing an administrator of the network's main site who is not a Super Admin to download a full backup of the entire network, including every site's data and the shared webroot.
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 JetBackup 3.1.18.8 ~ 3.1.23.5 -

II. Public POCs for CVE-2026-19454

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III. Intelligence Information for CVE-2026-19454

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Vendor Advisories for CVE-2026-19454 (1)

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

CVE-2026-19223 Smush < 4.3.2 - Admin+ Network-Wide RCE via Hub Connector on Multisite
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-2026-19715 WP OAuth Server < 6.3.1 - Unauthenticated OAuth Token and User Data Disclosure via Debug L
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 product: JetBackup
Same vendor: Unknown

V. Comments for CVE-2026-19454

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