Reported vulnerability

HubSpot All-In-One Marketing <= 11.3.62 - Authenticated (Contributor+) Sensitive Information Exposure via Block Editor Localized Script

Q: Which versions of HubSpot All-In-One Marketing – Forms, Popups, Live Chat are affected?

Wordfence lists these affected versions: Start version unspecified, through 11.3.62. Use the version checker above to compare your installed release with this report.

Q: Is a fix available for HubSpot All-In-One Marketing – Forms, Popups, Live Chat?

Wordfence reports a fix for this issue in HubSpot All-In-One Marketing – Forms, Popups, Live Chat. It lists these fixed versions: 11.3.64. Back up your website and test the recommended update before applying it to your live site.

Q: Where can I find my installed plugin version?

In WordPress, open Plugins > Installed Plugins and find the version shown beneath the plugin name.

Published 16 Jul 2026

Updated 17 Jul 2026

CVE-2026-9656

Compare your installed software with the affected versions below. Follow the source’s remediation guidance and test an available update after taking a backup. A database entry describes a reported issue; it does not establish whether a particular website has been compromised.

Does this affect my version?

Check your installed version against this advisory. This compares the report’s version ranges and does not scan your website.

Wordfence advisory

medium · CVSS 4.3

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.

Severity vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

HubSpot All-In-One Marketing – Forms, Popups, Live Chat

Software: plugin · leadin
Affected versions: Start version unspecified, through 11.3.62
Fix availability: Fix available
Fixed versions: 11.3.64

Recommended action

Update to version 11.3.64, or a newer patched version

Further references (1)

wordfence.com/threat-intel/vulnerabilities/id/718d7ea3-d8ba-46a0-9ab1-72657bd82c17?source=api-prod

Data sources and licences

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CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE®). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy.

Read licence terms

Source: Wordfence

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Questions about this vulnerability

Which versions of HubSpot All-In-One Marketing – Forms, Popups, Live Chat are affected?

Wordfence lists these affected versions: Start version unspecified, through 11.3.62. Use the version checker above to compare your installed release with this report.

Is a fix available for HubSpot All-In-One Marketing – Forms, Popups, Live Chat?

Wordfence reports a fix for this issue in HubSpot All-In-One Marketing – Forms, Popups, Live Chat. It lists these fixed versions: 11.3.64. Back up your website and test the recommended update before applying it to your live site.

Where can I find my installed plugin version?

In WordPress, open Plugins > Installed Plugins and find the version shown beneath the plugin name.

Does an affected version mean my website has been hacked?

An affected version means the installed release matches a vulnerability described in this report. It does not show whether anyone has exploited it on your website. The checker compares version numbers with stored reports; it does not inspect your website.

These reports cover at least one of the same plugins, themes or WordPress core. Check each report’s affected versions separately.

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