CVE-2026-84934— JCH Optimize < 6.0.1 - Subscriber+ Stored XSS via getcacheinfo Task Override
Quick assessment
Affected
Unknown JCH Optimize
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.
JCH Optimize WordPress 插件在 6.0.1 版本之前，未对其某个经过身份验证的 AJAX 操作执行权限（capability）检查，并且允许请求指定要执行的内部操作。这使得任何经过身份验证的用户（例如订阅者）可以导入 JCH Optimize WordPress 插件（6.0.1 之前版本）的任意设置，并存储一段脚本，该脚本将在浏览该网站的任何访客或管理员的浏览器中执行。
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I. Basic Information for CVE-2026-84934
Vulnerability Information
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Vulnerability Title
JCH Optimize < 6.0.1 - Subscriber+ Stored XSS via getcacheinfo Task Override
Source: CVE Program / CVE List V5
Vulnerability Description
The JCH Optimize WordPress plugin before 6.0.1 does not perform a capability check on one of its authenticated AJAX actions and lets the request choose which internal action runs, allowing any authenticated users such as Subscribers to import arbitrary JCH Optimize WordPress plugin before 6.0.1 settings and store a script that executes in the browser of any visitor or administrator viewing the site.
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 | JCH Optimize | 0 ~ 6.0.1 | - |
|
II. Public POCs for CVE-2026-84934
| # | POC Description | Source Link | Shenlong Link |
|---|
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Other References for CVE-2026-84934 (1)
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https://wpscan.com/vulnerability/d808ad17-d20e-4ee5-94f3-935c10cde772/ exploit vdb-entry technical-description
Same Patch Batch · Unknown · 2026-09-05 · 34 CVEs total
| CVE-2026-77826 | RegistrationMagic 5.0.1.8 - 6.0.9.8 - Unauthenticated Authentication Bypass via Missing Fa | |
| CVE-2026-82304 | Music Store – WordPress eCommerce < 1.4.5 - Unauthenticated SQLi via paypal-data Handler | |
| CVE-2026-81424 | Accept Stripe Payments < 2.1.4 - Unauthenticated Product Substitution via IDOR | |
| CVE-2026-83543 | Greenshift < 13.2.0 - Contributor+ SSRF via get-csv-to-json REST Endpoint | |
| CVE-2026-83544 | Greenshift < 13.2.0 - Contributor+ Stored XSS via Block Animation customProps Attribute | |
| CVE-2026-81423 | Accept Stripe Payments < 2.1.4 - Open Redirect via IPN Handler | |
| CVE-2026-81348 | My Private Site < 4.2.3 - Unauthenticated Sensitive Information Exposure via RSS Feeds and | |
| CVE-2026-81404 | IPGP Visitors Origin < 1.6 - Reflected XSS | |
| CVE-2026-78362 | SEO Flow by LupsOnline 3.0.0 - 3.0.2 - Unauthenticated Privilege Escalation via API Key Au | |
| CVE-2026-82846 | Masteriyo LMS 1.18.0 - 2.3.3 - Instructor+ Stored XSS via Course Custom Fields | |
| CVE-2026-78149 | Post Carousel 4.0.0 - 4.0.7 - Unauthenticated Password-Protected Post Content and post_pas | |
| CVE-2026-78150 | Post Carousel 4.0.0 - 4.0.7 - Contributor+ Private and Protected Post Content Disclosure v | |
| CVE-2026-19861 | JetFormBuilder < 3.6.5.2 - Unauthenticated Stored XSS via WYSIWYG Field in Notification Em | |
| CVE-2026-15247 | Search Atlas SEO < 2.6.24 - Subscriber+ Google Service Account Credential Overwrite/Deleti | |
| CVE-2026-19858 | JetFormBuilder < 3.6.5.2 - Unauthenticated Password Hash and Arbitrary Metadata Disclosure | |
| CVE-2025-15694 | Joli Table Of Contents 2.0.0 - 2.8.0 - Admin+ Stored XSS | |
| CVE-2025-15693 | JCH Optimize 4.2.1 - 5.0.0 - Admin+ Path Traversal | |
| CVE-2026-84937 | YT Player < 2.1.0 - Contributor+ SQLi via ytp_ajax | |
| CVE-2026-84021 | Bold Page Builder < 5.9.8 - Contributor+ Stored XSS via bt_bb_button/bt_bb_headline/bt_bb_ | |
| CVE-2026-84022 | Bold Page Builder < 5.9.8 - Contributor+ Stored XSS via Multiple Shortcode Element Attribu |
Showing top 20 of 34 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
Same product: JCH Optimize
Same vendor: Unknown
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CVE-2026-84931
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CVE-2026-84930
CatFolders Document Gallery < 2.0.7 - Author+ Stored XSS via -
CVE-2026-84936
EmbedPress 4.6.0 - 4.6.3 - Unauthenticated Google Reviews AP
V. Comments for CVE-2026-84934
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