Auth bypass in Mettle Sendportal
CVE-2026-15192
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.
Vulnerability class: Broken Authentication
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L.
EPSS exploit prediction
EPSS: 0.008 (54.0th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 54th percentile — 54.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.008 · newest: 0.008 · change: 0.000
Affected products
- Mettle Sendportal — versions 3.0.0, 3.0.1
Weakness classification (CWE)
References
- github.com/mettle/sendportal/ (product)
- github.com/mettle/sendportal/issues/340 (issue-tracking, exploit)
- vuldb.com/cve/CVE-2026-15192 (third-party-advisory)
- vuldb.com/submit/851624 (third-party-advisory)
- vuldb.com/vuln/377118 (technical-description, vdb-entry)
- vuldb.com/vuln/377118/cti (signature, permissions-required)
Frequently asked questions
- What is CVE-2026-15192?
- CVE-2026-15192 is a medium-severity vulnerability in Mettle Sendportal, classified under Improper Authentication. CVSS score: 6.5/10. Published 2026-07-09.
- How severe is CVE-2026-15192?
- Medium severity. CVSS v3 base score is 6.5 out of 10.