HubSpot All-In-One Marketing <= 11.3.62 — Authenticated (Contributor+) Sensitive Information Exposure via Block Editor Localized Script
CVE-2026-9656Published · Updated Action summary
Affected: ≤11.3.62Update to 11.3.64 or newer
All remediation steps- Severity
- Medium4.3
- CVSS
- 4.3CVSS 3.1 · CNA (Wordfence)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:NWhat does this vector mean?
AV:NAttack vector- Network
AC:LAttack complexity- Low
PR:LPrivileges required- Low
UI:NUser interaction- None
S:UScope- Unchanged
C:LConfidentiality- Low
I:NIntegrity- None
A:NAvailability- None
- Weakness
- CWE-200 Information Exposure
- Required access
- Unknown
- Exploit prediction (EPSS)
- No score
- CISA KEV
- Not listed
On this page8
Am I affected?
HubSpot All-In-One Marketing – Forms, Popups, Live Chat leadin
- Affected≤ 11.3.62
- Patched in11.3.64
Update to 11.3.64 or newer.
You are affected if you run ≤ 11.3.62. Version 11.3.64 and later are not affected by this issue.
- Check your version: in wp-admin go to Plugins → Installed Plugins and read the version under HubSpot All-In-One Marketing – Forms, Popups, Live Chat.
- No admin access? Run a passive check of your site. It reads public files only.
What to do
- Update to version 11.3.64, or a newer patched version
- Rotate administrator passwords and application secrets if the site ran a vulnerable version while publicly reachable.
- Watch HubSpot All-In-One Marketing – Forms, Popups, Live Chat to get an email when the next vulnerability is published.
Advisory
Source description from Wordfence Intelligence, credited to anhcd05.
The HubSpot All-In-One Marketing – Forms, Popups, Live Chat plugin for WordPress is vulnerable to Sensitive Information Exposure in all versions up to, and including, 11.3.62 via the wp_localize_script() / window.leadinConfig JavaScript object. This makes it possible for authenticated attackers, with contributor-level access and above, to extract the site's plaintext HubSpot OAuth refresh token exposed via the window.leadinConfig JavaScript object, which can then be used to access or modify data in the connected HubSpot tenant. Although the refresh token is stored at rest with AES-256-CTR encryption, decryption occurs server-side before the plaintext value is passed to wp_localize_script(), rendering the at-rest encryption ineffective against this exposure path.
Exploits & references
Proof-of-concept & detection
No public proof-of-concept or detection template is known for this vulnerability.
Advisories & patches
- Advisorywordfence.com
Related CVEs
More in HubSpot All-In-One Marketing – Forms, Popups, Live Chat
All 5| Severity | Vulnerability | CVE | Published |
|---|---|---|---|
| Medium4.3 | Authenticated (Contributor+) Information Exposure ≤11.3.55Update to 11.3.56 | CVE-2026-57736 | |
| Medium4.3 | Forms, Popups, Live Chat <= 11.3.32 - Missing Authorization to Authenticated (Contributor+) Installed Plugin Disclosure ≤11.3.32Update to 11.3.33 | CVE-2025-11762 | |
| Medium6.4 | Authenticated (Contributor+) Stored Cross-Site Scripting via HubSpot Meeting Widget ≤11.1.22Update to 11.1.34 | CVE-2024-5879 | |
| High8.1 | Server Side Request Forgery <8.8.15Update to 8.8.15 | CVE-2022-1239 |
- Medium4.3Authenticated (Contributor+) Information Exposure
≤11.3.55Update to 11.3.56
- Medium4.3Forms, Popups, Live Chat <= 11.3.32 - Missing Authorization to Authenticated (Contributor+) Installed Plugin Disclosure
≤11.3.32Update to 11.3.33
- Medium6.4Authenticated (Contributor+) Stored Cross-Site Scripting via HubSpot Meeting Widget
≤11.1.22Update to 11.1.34
- High8.1Server Side Request Forgery
<8.8.15Update to 8.8.15
Same weakness (Information Exposure)
All Information Exposure| Severity | Vulnerability | CVE | Published |
|---|---|---|---|
| High7.2 | Unauthenticated Stored Cross-Site Scripting via Comment User-Agent Header | CVE-2026-120688 | |
| Critical9.8 | Unauthenticated Arbitrary File Upload via File Upload via Public Form Submission | CVE-2026-125055 | |
| Critical9.8 | Unauthenticated PHP Object Injection to Remote Code Execution via 'form' Parameter | CVE-2026-119077 | |
| Medium5.3 | Unauthenticated Sensitive Information Exposure in 'search' Parameter | CVE-2026-121518 |
- High7.2Unauthenticated Stored Cross-Site Scripting via Comment User-Agent Header
EZ SQL Reports Shortcode Widget and DB Backup
≤5.25.25Update to 5.26.45
- Critical9.8Unauthenticated Arbitrary File Upload via File Upload via Public Form Submission
Chatterbug Forms – Fast, Flexible WordPress Form Builder
≤1.0.2Update to 1.1
- Critical9.8Unauthenticated PHP Object Injection to Remote Code Execution via 'form' Parameter
ELEX WordPress HelpDesk & Customer Ticketing System
≤3.3.9Update to 3.4.0
- Medium5.3Unauthenticated Sensitive Information Exposure in 'search' Parameter
Customer Reviews for WooCommerce
≤5.127.0Update to 5.128.0
Timeline
CVE published
Severity medium, CVSS 4.3
Record last updated
Sources & licenses
Wordfence record- Vulnerability data
- Wordfence Intelligence. [object Object] Licensed under the CC BY-SA 4.0.
- CVE® identifiers
- [object Object]. Used under the CVE Program. CVE® is a registered trademark of The MITRE Corporation.
- CVSS / CWE
- National Vulnerability Database (NVD), shown unmodified. This product uses the NVD API but is not endorsed or certified by the NVD.
- VulnCrest content
- Summary, remediation guidance and page layout © VulnCrest. Not sourced from NVD.