CVE-2026-97315: CWE-74 Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection') in Responsive Blocks
Description
CVE-2026-97315 is a vulnerability in the Responsive Blocks WordPress plugin before version 2.3.0. It allows unauthenticated users to inject arbitrary HTML into notification emails sent to site owners via the Form block, due to improper sanitization and escaping of submitted values. This can lead to phishing links being embedded in these emails.
CVSS v3.1
Score 5.4medium
Affected software
Responsive Blocks
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The Responsive Blocks WordPress plugin versions prior to 2.3.0 do not properly sanitize or escape certain user-submitted values in the Form block before including them in HTML notification emails sent to site owners. This improper neutralization of special elements (CWE-74) enables unauthenticated attackers to inject arbitrary HTML content, such as phishing links, into these emails.
Potential Impact
An attacker can inject arbitrary HTML into notification emails sent to the site owner, potentially enabling phishing attacks or other malicious content delivery through these emails. The confidentiality and integrity of the email content can be compromised, but there is no indication of impact on availability or direct code execution.
Mitigation Recommendations
Upgrade the Responsive Blocks plugin to version 2.3.0 or later, where this vulnerability is fixed. Since no official patch link is provided, verify the plugin version and update accordingly to ensure the issue is resolved.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- WPScan
- Date Reserved
- 2026-09-24T11:27:35.308Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6acf5e2e2cdf04f6566e4b20
Added to database: 10/14/2026, 10:49:18 UTC
Last enriched: 10/14/2026, 11:04:01 UTC
Last updated: 10/14/2026, 11:08:18 UTC
Views: 4
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