Is HubSpot All-In-One Marketing safe to use?

Laskyr does not give safety verdicts. No known unpatched vulnerabilities in the latest version (11.3.75). As of 2026-11-04. 4 issues are on record for older versions; version 11.3.64 or newer fixes all of them that state a fix. Keep HubSpot All-In-One Marketing on the latest version (11.3.75) and remove it if you do not use it.

Which versions of HubSpot All-In-One Marketing are vulnerable?

Known issues on record (newest first): Information disclosure (11.3.62 and older, fixed in 11.3.64); Information disclosure (11.3.51 and older, fixed in 11.3.56); Information disclosure (11.3.32 and older, fixed in 11.3.33); Stored cross-site scripting (XSS) (11.1.22 and older, fixed in 11.1.34). The full list with sources is on this page.

What is the latest version of HubSpot All-In-One Marketing?

11.3.75, according to wordpress.org (last updated 2026-09-16). It has 200,000+ active installs.

What should I do if my HubSpot All-In-One Marketing is out of date?

Take a backup, then update it from Dashboard > Updates (or run wp plugin update leadin). If you cannot update right away, deactivate it until you can. If you think the site was already attacked, run a free scan at https://laskyr.com/scan.

Plugins · leadin · data as of 2026-11-04

Is HubSpot All-In-One Marketing safe? Known vulnerabilities and latest version

Latest version: 11.3.75
Last updated: 2026-09-16
Active installs: 200,000+
Known issues on record: 4
Unpatched in latest: 0
Tested up to WP: 6.9.11 · PHP 7.2+

The CRM, Sales, and Marketing WordPress plugin to grow your business better. Capture and engage web visitors with free live chat, forms, CRM, email ma … — by HubSpot

What to do

Update to the latest version (11.3.75). Anything older than 11.3.64 has at least one known issue listed below. Dashboard → Updates, or Plugins → “update now”.
If you cannot update right away, deactivate it until you can.
Turn on auto-updates for it: Plugins → “Enable auto-updates” on its row.
If you ran a vulnerable version and something looks off (spam pages, strange admins, redirects), run the free scan.

With WP-CLI: wp plugin get leadin --field=version shows what you run; wp plugin update leadin updates it.

Check your version

Known vulnerabilities

4 on record, newest first. “Affected” is the version range the source gives; “fixed in” is the version the source names, or (marked *) the first wordpress.org release after the last affected version.

medium 4.3 CVE-2026-9656 · published 2026-07-17

Information disclosure in HubSpot All-In-One Marketing (11.3.62 and older)

Affected: 11.3.62 and older
Fixed in: 11.3.64 *
Access needed (per CVSS): Needs a low-level account (e.g. subscriber)
Range from: CVE record (the advisory publisher) · score by Wordfence

Details from the advisory

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.

NVD CVE-2026-9656 Wordfence advisory Code change (fix)Plugin source

high 7.4 CVE-2026-57736 · published 2026-07-01

Information disclosure in HubSpot All-In-One Marketing (11.3.51 and older)

Affected: 11.3.51 and older
Fixed in: 11.3.56 *
Access needed (per CVSS): Needs a low-level account (e.g. subscriber)
Range from: CVE record (the advisory publisher) · score by Patchstack

Details from the advisory

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.

NVD CVE-2026-57736 Patchstack advisory

medium 4.3 CVE-2025-11762 · published 2026-04-24

Information disclosure in HubSpot All-In-One Marketing (11.3.32 and older)

Affected: 11.3.32 and older
Fixed in: 11.3.33 *
Access needed (per CVSS): Needs a low-level account (e.g. subscriber)
Range from: CVE record (the advisory publisher) · score by Wordfence

Details from the advisory

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, 11.3.32 via the leadin/public/admin/class-adminconstants.php file. This makes it possible for authenticated attackers, with Contributor-level access and above, to extract a list of all installed plugins and their versions which can be leveraged for reconnaissance and further attacks.

NVD CVE-2025-11762 Wordfence advisory research.cleantalk.org Plugin source

medium 5.4 CVE-2024-5879 · published 2024-08-30

Stored cross-site scripting (XSS) in HubSpot All-In-One Marketing (11.1.22 and older)

Affected: 11.1.22 and older
Fixed in: 11.1.34 *
Access needed (per CVSS): Needs a low-level account (e.g. subscriber); someone on the site has to click a link or open a page
Range from: CVE record (the advisory publisher) · score by NVD

Details from the advisory

The HubSpot – CRM, Email Marketing, Live Chat, Forms & Analytics plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'url' attribute of the HubSpot Meeting Widget in all versions up to, and including, 11.1.22 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with Contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

NVD CVE-2024-5879 Wordfence advisory Code change (fix)Plugin source

Recent activity

2026-09-16 — latest release on wordpress.org (11.3.75).
2026-07-17 — Information disclosure disclosed (CVE-2026-9656), fixed in 11.3.64.
2026-07-01 — Information disclosure disclosed (CVE-2026-57736), fixed in 11.3.56.
2026-04-24 — Information disclosure disclosed (CVE-2025-11762), fixed in 11.3.33.

Free. We check the CVE feeds every day and email you only when a new issue for HubSpot All-In-One Marketing (leadin) is published or a fix ships. Unsubscribe in one click.

Browse vulnerabilities

Types found in this plugin: Sensitive data exposure (3) · Cross-site scripting (XSS) (1)

Where this data comes from

Version, last update, installs: wordpress.org/plugins/leadin (Plugins API), fetched 2026-11-04.
Vulnerabilities: NIST National Vulnerability Database (NVD), checked 2026-11-04. This product uses data from the NVD API but is not endorsed or certified by the NVD.
Each record links to its CVE page and to the original advisory (Wordfence, Patchstack or WPScan) where there is one. We only list a CVE here when its references or its advisory name this exact plugin, so a few real issues may be missing; none should be about a different plugin. Spot an error? Email Daniel.

Badge for your site or docs (states facts with a date, not a verdict):

<a href="https://laskyr.com/plugins/leadin"><img src="https://laskyr.com/plugins/leadin/badge.svg" alt="HubSpot All-In-One Marketing vulnerability status"></a>

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Is HubSpot All-In-One Marketing safe? Known vulnerabilities and latest version

No known unpatched vulnerabilities in the latest version (11.3.75)

What to do

Check your version

Known vulnerabilities

Information disclosure in HubSpot All-In-One Marketing (11.3.62 and older)

Information disclosure in HubSpot All-In-One Marketing (11.3.51 and older)

Information disclosure in HubSpot All-In-One Marketing (11.3.32 and older)

Stored cross-site scripting (XSS) in HubSpot All-In-One Marketing (11.1.22 and older)

Recent activity

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Browse vulnerabilities

Where this data comes from