CVE-2026-15192

MEDIUMPre-NVD 6.56.5—
EchelonGraph scoreHIGH confidence

Score 6.5 from GitHub Security Advisory published 2026-07-09. a secondary CVSS source baseline 6.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 5 sources updated this weekElevated
6.5
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 1%CVSS: 6.5Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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.

CVSS v3
6.5
EG Score
6.5(high)
EPSS
43.3%
KEV
Not listed

Published

July 9, 2026

Last Modified

July 9, 2026

Advisory Details (2)

Auto-updated Jul 9, 2026
🔬 Proof of concept available. No patch confirmed yet.
generic🟡 PoC Available

Security: Unauthenticated Forged SendGrid Webhooks Allow Subscriber Suppression Due to Missing Signature Verification · Issue #340 · mettle/sendportal · GitHub

https://github.com/mettle/sendportal/issues/340
generic

GitHub - mettle/sendportal: Open-source self-hosted email marketing. Manage your own newsletters at a fraction of the cost. · GitHub

https://github.com/mettle/sendportal/

Vendor Advisories for CVE-2026-15192(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(2)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 16× in last 7d / 16× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-07-13 17:24 UTCEG score recompute
  2. 2026-07-13 17:24 UTCGHSA enrichment
  3. 2026-07-13 06:12 UTCEPSS rescore
  4. 2026-07-12 17:22 UTCEG score recompute
  5. 2026-07-12 17:22 UTCGHSA enrichment
  6. 2026-07-12 05:46 UTCEPSS rescore
  7. 2026-07-11 17:20 UTCEG score recompute
  8. 2026-07-11 17:20 UTCGHSA enrichment
  9. 2026-07-11 08:27 UTCEPSS rescore
  10. 2026-07-10 17:19 UTCEG score recompute
  11. 2026-07-10 17:19 UTCGHSA enrichment
  12. 2026-07-09 19:07 UTCNVD updateCVSS v4 → 5.5
  13. 2026-07-09 18:35 UTCMITRE cvelistV5CVSS v4 → 6.9
  14. 2026-07-09 17:54 UTCNVD updateCVSS v4 → 5.5
  15. 2026-07-09 17:17 UTCEG score recompute
  16. 2026-07-09 17:15 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-15192?
CVE-2026-15192 is a medium vulnerability published on July 9, 2026. 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…
When was CVE-2026-15192 disclosed?
CVE-2026-15192 was first published in the National Vulnerability Database on July 9, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-15192 actively exploited?
CVE-2026-15192 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 43.3% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-15192?
CVE-2026-15192 has a CVSS v3 base score of 6.5 (NVD).
How do I remediate CVE-2026-15192?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-15192, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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