CVE-2026-9656 Details
Description
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.
A vulnerability allowing sensitive information exposure has been identified in the HubSpot All-In-One Marketing – Forms, Popups, Live Chat plugin for WordPress, affecting all versions through 11.3.62. The issue arises from the wp_localize_script() function, which exposes the site's plaintext HubSpot OAuth refresh token via the window.leadinConfig JavaScript object. This exposure allows authenticated attackers with contributor-level access and above to extract the refresh token, which can be used to access or modify data in the connected HubSpot tenant. Although the refresh token is encrypted at rest using AES-256-CTR, the decryption occurs server-side before the plaintext token is passed to wp_localize_script(), rendering the encryption ineffective against this exposure.
Users are advised to update the HubSpot All-In-One Marketing – Forms, Popups, Live Chat plugin to version 11.3.64 or later.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Jul 17, 2026CISA-ADP
Assessed Jul 17, 2026References to Advisories, Solutions, and Tools
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Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-200 | Exposure of Sensitive Information to an Unauthorized Actor | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| HubSpot All-In-One Marketing | <= 11.3.62 (semver) |
CPE
Remediation
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Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jul 17, 2026 | CVE Modified | CISA-ADP |
| Jul 17, 2026 | New CVE Received | [email protected] |