CVE-2026-77826— RegistrationMagic 5.0.1.8 - 6.0.9.8 - Unauthenticated Authentication Bypass via Missing Facebook Token Audience Validation
Quick assessment
Affected
Unknown RegistrationMagic
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.
RegistrationMagic WordPress 插件 6.0.9.9 之前版本在未验证 Facebook 访问令牌（access token）是哪个应用签发的情况下，就将其作为身份证明接受，这使得未认证的攻击者能够登录某个现有用户（前提是攻击者能够获取该用户的令牌），或者在用户注册被禁用的情况下，也能创建并登录一个新账户。
Possible ATT&CK Techniques 1 AI
T1531.002
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I. Basic Information for CVE-2026-77826
Vulnerability Information
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Vulnerability Title
RegistrationMagic 5.0.1.8 - 6.0.9.8 - Unauthenticated Authentication Bypass via Missing Facebook Token Audience Validation
Source: CVE Program / CVE List V5
Vulnerability Description
The RegistrationMagic WordPress plugin before 6.0.9.9 does not verify which application a Facebook access token was issued to before accepting it as proof of identity, allowing unauthenticated attackers to log in as an existing user whose token they can obtain, or to create and log into a new account even when user registration is disabled.
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 | RegistrationMagic | 5.0.1.8 ~ 6.0.9.9 | - |
|
II. Public POCs for CVE-2026-77826
| # | 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-2026-77826 (1)
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https://wpscan.com/vulnerability/b79a83e8-d7b0-4aa8-b2ba-37a7eecd437b/ exploit vdb-entry technical-description
Same Patch Batch · Unknown · 2026-09-05 · 34 CVEs total
| 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-2026-82304 | 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-2026-84021 | Bold Page Builder < 5.9.8 - Contributor+ Stored XSS via bt_bb_button/bt_bb_headline/bt_bb_ | |
| 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: RegistrationMagic
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CVE-2026-77794
RegistrationMagic 6.0.0.0 - 6.0.9.8 - Unauthenticated Paymen -
CVE-2026-77793
RegistrationMagic < 6.0.9.9 - Unauthenticated Payment Bypass -
CVE-2026-77792
RegistrationMagic < 6.0.9.9 - Unauthenticated Stored XSS via -
CVE-2026-82225
WordPress RegistrationMagic plugin <= 6.0.9.8 - Broken Authe -
CVE-2026-82221
WordPress RegistrationMagic plugin <= 6.0.9.8 - Cross Site S
Same vendor: Unknown
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CVE-2026-84937
YT Player < 2.1.0 - Contributor+ SQLi via ytp_ajax -
CVE-2026-84927
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CVE-2026-84931
Joli Table Of Contents < 3.0.3 - Author+ Stored XSS via joli -
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
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