HubSpot Plugin up to 11.3.51 on WordPress insertion of sensitive information into sent data

Summaryinfo

A vulnerability identified as problematic has been detected in HubSpot Plugin up to 11.3.51 on WordPress. The impacted element is an unknown function. Performing a manipulation results in insertion of sensitive information into sent data. This vulnerability is reported as CVE-2026-57736. The attack is possible to be carried out remotely. No exploit exists.

Detailsinfo

A vulnerability was found in HubSpot Plugin up to 11.3.51 on WordPress. It has been classified as problematic. This affects some unknown functionality. The manipulation with an unknown input leads to a insertion of sensitive information into sent data vulnerability. CWE is classifying the issue as CWE-201. The code transmits data to another actor, but a portion of the data includes sensitive information that should not be accessible to that actor. This is going to have an impact on confidentiality. The summary by CVE is:

Insertion of Sensitive Information Into Sent Data vulnerability in HubSpot allows Retrieve Embedded Sensitive Data. This issue affects HubSpot: from n/a through 11.3.51.

The weakness was disclosed by Jakub Herman. The advisory is shared at patchstack.com. This vulnerability is uniquely identified as CVE-2026-57736 since 06/25/2026. The exploitability is told to be easy. It is possible to initiate the attack remotely. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 07/01/2026). MITRE ATT&CK project uses the attack technique T1592 for this issue.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-41104). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

• WordPress Plugin

Name

• HubSpot Plugin

Version

• 11.3.0
• 11.3.1
• 11.3.2
• 11.3.3
• 11.3.4
• 11.3.5
• 11.3.6
• 11.3.7
• 11.3.8
• 11.3.9
• 11.3.10
• 11.3.11
• 11.3.12
• 11.3.13
• 11.3.14
• 11.3.15
• 11.3.16
• 11.3.17
• 11.3.18
• 11.3.19
• 11.3.20
• 11.3.21
• 11.3.22
• 11.3.23
• 11.3.24
• 11.3.25
• 11.3.26
• 11.3.27
• 11.3.28
• 11.3.29
• 11.3.30
• 11.3.31
• 11.3.32
• 11.3.33
• 11.3.34
• 11.3.35
• 11.3.36
• 11.3.37
• 11.3.38
• 11.3.39
• 11.3.40
• 11.3.41
• 11.3.42
• 11.3.43
• 11.3.44
• 11.3.45
• 11.3.46
• 11.3.47
• 11.3.48
• 11.3.49
• 11.3.50
• 11.3.51

CPE 2.3info

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Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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