HubSpot All-In-One Marketing – Forms, Popups, Live Chat <= 11.3.55 - Authenticated (Contributor+) Information Exposure
Strategic Overview
- Status
- Patched in 11.3.56
- Affected Plugin
- HubSpot All-In-One Marketing – Forms, Popups, Live Chat
- Affected Version
<= 11.3.55- CVSS
- 4.3Medium
- Weakness type
- CWE-200 · Exposure of Sensitive Information to an Unauthorized Actor
- CVE
CVE-2026-57736
At a glance
CVE-2026-57736 is a medium-severity Exposure of Sensitive Information to an Unauthorized Actor vulnerability in the HubSpot All-In-One Marketing WordPress plugin, affecting versions <= 11.3.55. It carries a CVSS score of 4.3 (reachable over the network; low attack complexity). Exploitation requires an authenticated account at Contributor level or above. The issue is fixed in version 11.3.56; sites on affected versions should update now. Disclosed July 2026, reported by Jakub Herman.
Vulnerability Overview
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, 11.3.55. This makes it possible for authenticated attackers, with Contributor-level access and above, to extract sensitive user or configuration data.
Technical Analysis
The vector marks this flaw as remotely reachable over the network, with low attack complexity — no special timing or configuration is needed, and no interaction from a victim user.
CWE-200: Exposure of Sensitive Information to an Unauthorized Actor
Reaching this weakness in HubSpot All-In-One Marketing <= 11.3.55 takes an account at Contributor level or above. Sensitive information exposure means data the application intended to keep internal is returned to a caller who should not be able to see it.
The disclosed data — credentials, tokens, customer records or internal paths — is usually worth more as material for a follow-up attack than as an end in itself. For HubSpot All-In-One Marketing the fix is 11.3.56: builds <= 11.3.55 are affected, anything from 11.3.56 onward is not.
Remediation
Update to version 11.3.56, or a newer patched version
How does WordSec protect against this?
The fix is the thing that ends this: HubSpot All-In-One Marketing 11.3.56 closes this, and updating the plugin is the step that ends it.
- Alerts
External References
Related records
Same weakness class
Other vulnerabilities in HubSpot All-In-One Marketing – Forms, Popups, Live Chat
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