CVE-2026-15192
MediumCVSS 6.5Exploitation Probability (EPSS)
Low risk43th percentile - higher than 43% of all known CVEs
Summary
A missing authentication vulnerability has been found in Mettle SendPortal up to version 3.0.1, affecting the APIv1 Webhooks component for sendgrid/postmark/postal/mailjet functions. The attack can be carried out remotely and the exploit has been publicly disclosed.
Risk Assessment
The organization is at risk of unauthorized webhook calls, which could lead to data tampering, information leakage, or disruption of the mailing system.
Recommendation
Immediately update Mettle SendPortal to the latest version or apply temporary mitigations such as restricting APIv1 Webhooks access to trusted IP addresses.
Other vulnerabilities in Mettle SendPortal
See all- CVE-2026-26483Medium
Mettle SendPortal 3.0.1 and earlier contains a stored XSS vulnerability in the template management functionality. The application fails to properly sanitize user-supplied input in the content parameter of the /templates endpoint, allowing an attacker to persistently inject malicious JavaScript code.
- CVE-2026-15191Medium
A vulnerability has been found in Mettle SendPortal up to version 3.0.1 in the campaign creation endpoint. Unknown code in CampaignStoreRequest.php allows remote authorization bypass. The exploit has been published and may be used.
- CVE-2026-10234Low
An unknown part of the /webview/ file in the Campaign Handler component in Mettle sendportal up to version 3.0.1 is vulnerable to XSS via manipulation of the content argument. The attack can be performed remotely and the exploit is publicly available. The project was notified but has not responded.
Original NVD description (English source)
A vulnerability has been found in mettle sendportal up to 3.0.1. This issue affects the function sendgrid/postmark/postal/mailjet of the component APIv1 Webhooks. The manipulation leads to missing authentication. The attack is possible to be carried out remotely. The exploit has been disclosed to the public and may be used. The project was informed of the problem early through an issue report but has not responded yet.