smub WPConsent Plugin up to 1.1.9 on WordPress Simple HTML DOM Parser HTML injection

Summaryinfo

A vulnerability was found in smub WPConsent Plugin up to 1.1.9. It has been declared as problematic. The affected element is an unknown function of the component Simple HTML DOM Parser. Such manipulation leads to HTML injection. This vulnerability is documented as CVE-2026-97640. The attack can be executed remotely. There is not any exploit available.

Detailsinfo

A vulnerability was found in smub WPConsent Plugin up to 1.1.9 and classified as problematic. Affected by this issue is some unknown processing of the component Simple HTML DOM Parser. The manipulation with an unknown input leads to a html injection vulnerability. Using CWE to declare the problem leads to CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. Impacted is integrity. CVE summarizes:

The WPConsent – Cookie Banner & Cookie Consent for Privacy Compliance (GDPR / CCPA / EU Compliance Cookie Notice) plugin for WordPress is vulnerable to Stored Cross-Site Scripting via Comment Content via Simple HTML DOM Parser Noise-Key Restoration (mXSS) in all versions up to, and including, 1.1.9 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This requires the Script Blocking feature to be enabled, and the exploit chain depends on an attacker submitting two coordinated comments — one embedding event-handler syntax inside an allowed <code> element and one placing the deterministic ___noise___ restoration key inside an allowed <abbr title=""> attribute — with the key offset confirmable via an unauthenticated wpconsent_debug=1 request.

The advisory is shared for download at wordfence.com. This vulnerability is handled as CVE-2026-97640 since 09/24/2026. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. Successful exploitation requires user interaction by the victim. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 10/16/2026). The MITRE ATT&CK project declares the attack technique as T1059.007.

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

Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

• WordPress Plugin

Vendor

• smub

Name

• WPConsent Plugin

Version

• 1.1.0
• 1.1.1
• 1.1.2
• 1.1.3
• 1.1.4
• 1.1.5
• 1.1.6
• 1.1.7
• 1.1.8
• 1.1.9

CPE 2.3info

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CPE 2.2info

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Once again VulDB remains the best source for vulnerability data.

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