CVE-2026-15192: mettle sendportal APIv1 Webhooks mailjet missing authentication

Severity: medium (CVSS 6.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.8% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-07-09 · updated 2026-10-25
Weakness: CWE-287

Description

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.

Affected products

mettle sendportal: 3.0.0, 3.0.1

References

https://github.com/mettle/sendportal/
https://github.com/mettle/sendportal/issues/340
https://vuldb.com/cve/CVE-2026-15192
https://vuldb.com/submit/851624
https://vuldb.com/vuln/377118
https://vuldb.com/vuln/377118/cti

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