CVE-2026-84021— Bold Page Builder < 5.9.8 - Contributor+ Stored XSS via bt_bb_button/bt_bb_headline/bt_bb_icon URL
Quick assessment
Affected
Unknown Bold Page Builder
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.
以下是该漏洞描述的专业中文翻译： Bold Page Builder WordPress 插件在 5.9.8 版本之前，未对链接 URL 进行充分验证，而是依赖一个可被绕过的过滤器，从而允许拥有“投稿者”（Contributor）权限或更高权限的用户在 HTML 属性中注入任意 Web 脚本，当其他用户点击该受影响链接时，这些脚本将被执行。
Possible ATT&CK Techniques 1 AI
T1189 · Drive-by Compromise
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I. Basic Information for CVE-2026-84021
Vulnerability Information
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Vulnerability Title
Bold Page Builder < 5.9.8 - Contributor+ Stored XSS via bt_bb_button/bt_bb_headline/bt_bb_icon URL
Source: CVE Program / CVE List V5
Vulnerability Description
The Bold Page Builder WordPress plugin before 5.9.8 does not properly validate a link URL before outputting it in an HTML attribute, relying on a filter that can be evaded, allowing users with the Contributor role and above to inject arbitrary web scripts that execute when a user clicks the affected link.
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 | Bold Page Builder | 0 ~ 5.9.8 | - |
|
II. Public POCs for CVE-2026-84021
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
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No public POC found.
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Other References for CVE-2026-84021 (1)
-
https://wpscan.com/vulnerability/ca226eab-59a2-42d5-96f6-84dacf7c6c5a/ 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-2026-84022 | Bold Page Builder < 5.9.8 - Contributor+ Stored XSS via Multiple Shortcode Element Attribu | |
| CVE-2026-84221 | Kirki 6.0.0 - 6.2.5 - Editor+ SQLi via Content Manager Field ID |
Showing top 20 of 34 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
Same product: Bold Page Builder
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CVE-2026-84022
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CVE-2026-2357
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CVE-2026-25451
WordPress Bold Page Builder plugin <= 5.6.9 - Cross Site Scr -
CVE-2025-12159
Bold Page Builder <= 5.4.8 - Authenticated (Contributor+) St
Same vendor: Unknown
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CVE-2026-84937
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CVE-2026-84927
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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-2026-84021
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