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TI-2026-12796 Aliases CVE-2026-15192GHSA-qcqf-phv4-c959

mettle sendportal APIv1 Webhooks mailjet missing authentication

Priority HIGH 70CWE-287Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Security bypass
Confidentiality · integrity · availability
None · Low · Low
Fix status
No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-287.

Summary

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00763 55th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
mettlesendportal3.0.0; 3.0.1—No fix listedCNA
  • sendportal Vendormettle Affected 3.0.0; 3.0.1 Fixed in — No fix listed CNA

CPE names CNA · 1

CPEVersionsRoleVendor
cpe:2.3:a:mettle:sendportal:*:*:*:*:*:*:*:*——mettle
  • cpe:2.3:a:mettle:sendportal:*:*:*:*:*:*:*:* Versions — — ·mettle

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-15192
  2. 2026-10-03 Alias added: GHSA-qcqf-phv4-c959

References

Exploit 1

Other 1

  • TI-2026-75091 Authorization bypass in SendPortal lets members attach subscribers to other tags CVSS 4.0MEDIUM 5.3
  • TI-2026-12795 mettle sendportal Campaign Creation Endpoint CampaignStoreRequest.php authorization CVSS 4.0MEDIUM 5.3
  • TI-2026-08972 Mettle sendportal Campaign webview cross site scripting CVSS 4.0MEDIUM 5.1
  • TI-2026-06268 mettle sendportal Invitation WorkspaceInvitationsController.php destroy authorization CVSS 4.0MEDIUM 5.3

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences