Information Disclosure in HubSpot All-In-One Marketing – Forms, Popups, Live Chat (WordPress plugin) (CVE-2026-9656)
Summary
Vulnerability in HubSpot All-In-One Marketing – Forms, Popups, Live Chat (WordPress plugin) (CVE-2026-9656). Risk of unauthorized operations or information disclosure.
Original description
The description as published by the source.
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.
Source: NIST National Vulnerability Database NVD GitHub Advisory
Auto-generated summary
Assembled by SecPulse from the source data (CVSS, CWE, affected versions) using templates — no AI involved. Check the original description and references below for exact details.
A vulnerability tracked as CVE-2026-9656 has been found in HubSpot All-In-One Marketing – Forms, Popups, Live Chat (WordPress plugin).
Risk of unauthorized operations or information disclosure. CVSS score: 4.3/10.
What to do: apply the vendor's official patched release.
If unsure, ask your IT team or search "HubSpot All-In-One Marketing – Forms, Popups, Live Chat (WordPress plugin) CVE-2026-9656" on the vendor's site.
CVE-2026-9656 (HubSpot All-In-One Marketing – Forms, Popups, Live Chat (WordPress plugin)) — CWE-200 / CVSS v3 4.3
Attack vector: remote (network-reachable) / no user interaction
Plan: 1) Audit SBOM/dependencies, 2) Stage→prod upgrade, 3) Add WAF/proxy monitoring on affected endpoints, 4) Hunt IOCs in logs.
Refs: see the GHSA / vendor advisory / patched release linked on this page.
Information disclosure (CWE-200) exists in HubSpot All-In-One Marketing – Forms, Popups, Live Chat (WordPress plugin).
Check the vendor advisory for the affected versions of HubSpot All-In-One Marketing – Forms, Popups, Live Chat (WordPress plugin).
Severity: Medium (CVSS 4.3/10). Risk of unauthorized operations or information disclosure.
Update to the patched release per vendor advisory.
Until the patch is applied: disable the affected feature, apply WAF rules, or restrict access via network ACLs.
Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Audit SBOM/dependencies to find affected services.
Response actions
Concrete steps and command examples for SOC/SRE teams to execute in order
-
1Identify exposure identify
Audit SBOM/dependencies for affected components.資産台帳・SBOM・依存マニフェストで HubSpot All-In-One Marketing – Forms, Popups, Live Chat (WordPress plugin) を使っているサービスとバージョンを洗い出す。
-
2Post-deployment verification verify
Confirm patched version is live in productionパッチ適用後、ステージングで PoC または同等の悪用パターンを再現して脆弱性が閉じたことを確認。本番ではアクセスログ・WAF でアラート再発が無いか継続監視。
References
- web security@wordfence.com
- web security@wordfence.com
- web security@wordfence.com
- web security@wordfence.com
- web security@wordfence.com
- web security@wordfence.com
- web nvd.nist.gov
- web github.com