CVE-2026-15192

MEDIUMPre-NVD 6.56.5
EchelonGraph scoreMEDIUM confidence

“—” beside the score: it is equal to the CVSS score beside it.

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, GitHub Security Advisory, a secondary CVSS source
Elevated
6.5EG
EchelonGraph verdictPlan mitigationRemediate within your standard update timelines at low or medium mission impact and sooner than that at high (the SSVC decision on this page).
  • CISA's Vulnrichment rates exploitation as PoC; EchelonGraph holds no exploit-code reference for it
CISA-KEV: Not listedEPSS PROB: 0.8%CVSS: 6.5Exploit: No code on recordExposed services: Not assessed

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

The CVE record's description, written by its CNA (VulDB), states the affected versions: "A vulnerability has been found in mettle sendportal up to 3.0.1." No release containing a fix is confirmed on record.

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
6.5MEDIUMmedium confidence
EG Risk
60
EG Risk 60/100

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed (value × EchelonGraph’s weight)
Severity65% × 45%
The EG Score, 6.5 of 10.
Exploitation40% × 40%
EchelonGraph's fixed weight for EG-KEV Tier 3 (Elevated): a constant, not a probability.
Automatability100% × 15%
CISA's SSVC Automatable value: yes (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Attend at high (mission-essential systems).
Exploitation public PoC (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines at low or medium mission impact and sooner than that at high, and watch the vendor's advisory for the fix.
EPSS PROB
0.8%
EPSS %ILE
54th
KEV
Not listed

SSVC (CISA's decision table, applied by EchelonGraph)Track at low or medium mission impact; Attend at high (mission-essential systems).

No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines at low or medium mission impact and sooner than that at high, and watch the vendor's advisory for the fix.

Exploitation public PoC (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)14 days if the affected system is publicly exposed; 60 days if it is not.

In CISA KEV no (CISA's KEV catalog) · Automatable yes (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

July 9, 2026

Last Modified

September 3, 2026

Advisory Details (2)

Auto-updated Jul 9, 2026
No fix on record yet.
Web page

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
Web page

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 12× in last 7d / 34× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. 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. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.

Showing the most recent 100 of 181 refreshes on record for this CVE.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. None are among the latest 100 rows. The 81 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-14 16:32 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  2. 2026-10-13 16:33 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  3. 2026-10-12 16:33 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  4. 2026-10-12 16:32 UTCEG score recompute
  5. 2026-10-11 20:10 UTCEG score recompute
  6. 2026-10-11 17:22 UTCEG score recompute
  7. 2026-10-11 14:55 UTCEG score recompute
  8. 2026-10-11 13:48 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  9. 2026-10-10 19:59 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  10. 2026-10-09 20:06 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  11. 2026-10-08 17:11 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  12. 2026-10-07 23:47 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  13. 2026-10-06 15:17 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  14. 2026-10-05 17:42 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  15. 2026-10-03 14:25 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  16. 2026-10-01 19:49 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  17. 2026-10-01 16:02 UTCEG score recompute
  18. 2026-10-01 16:02 UTCGHSA enrichmentGHSA-qcqf-phv4-c959 · GitHub CVSS 6.5
  19. 2026-09-30 15:02 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  20. 2026-09-29 15:20 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  21. 2026-09-28 13:51 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  22. 2026-09-28 10:29 UTCEG score recompute
  23. 2026-09-28 10:29 UTCGHSA enrichmentGHSA-qcqf-phv4-c959 · GitHub CVSS 6.5
  24. 2026-09-27 13:47 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  25. 2026-09-26 15:58 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
Show 75 more
  1. 2026-09-24 11:24 UTCEG score recompute
  2. 2026-09-24 11:24 UTCGHSA enrichmentGHSA-qcqf-phv4-c959 · GitHub CVSS 6.5
  3. 2026-09-23 05:55 UTCEG score recompute
  4. 2026-09-23 05:55 UTCGHSA enrichmentGHSA-qcqf-phv4-c959 · GitHub CVSS 6.5
  5. 2026-09-18 19:27 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  6. 2026-09-18 05:36 UTCEG score recompute
  7. 2026-09-18 05:36 UTCGHSA enrichmentGHSA-qcqf-phv4-c959 · GitHub CVSS 6.5
  8. 2026-09-16 14:07 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  9. 2026-09-16 05:14 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  10. 2026-09-14 08:21 UTCEG score recompute
  11. 2026-09-14 08:21 UTCGHSA enrichmentGHSA-qcqf-phv4-c959 · GitHub CVSS 6.5
  12. 2026-09-13 16:46 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  13. 2026-09-13 08:19 UTCEG score recompute
  14. 2026-09-13 08:19 UTCGHSA enrichmentGHSA-qcqf-phv4-c959 · GitHub CVSS 6.5
  15. 2026-09-12 15:00 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  16. 2026-09-12 03:23 UTCEG score recompute
  17. 2026-09-12 03:23 UTCGHSA enrichmentGHSA-qcqf-phv4-c959 · GitHub CVSS 6.5
  18. 2026-09-11 14:52 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  19. 2026-09-11 09:36 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  20. 2026-09-10 09:34 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  21. 2026-09-08 22:00 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  22. 2026-09-07 16:01 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  23. 2026-09-06 13:47 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  24. 2026-09-05 22:35 UTCEG score recompute
  25. 2026-09-05 22:35 UTCGHSA enrichmentGHSA-qcqf-phv4-c959 · GitHub CVSS 6.5
  26. 2026-09-04 05:06 UTCEPSS rescoreEPSS 0.8% · 52nd percentile
  27. 2026-09-03 04:15 UTCEG score recompute
  28. 2026-09-03 04:15 UTCGHSA enrichmentGHSA-qcqf-phv4-c959 · GitHub CVSS 6.5
  29. 2026-09-02 14:11 UTCEPSS rescoreEPSS 0.8% · 52nd percentile
  30. 2026-09-01 13:53 UTCEPSS rescoreEPSS 0.8% · 52nd percentile
  31. 2026-09-01 04:39 UTCEPSS rescoreEPSS 0.8% · 52nd percentile
  32. 2026-08-30 19:17 UTCEPSS rescoreEPSS 0.8% · 52nd percentile
  33. 2026-08-30 06:45 UTCEG score recompute
  34. 2026-08-30 06:45 UTCGHSA enrichmentGHSA-qcqf-phv4-c959 · GitHub CVSS 6.5
  35. 2026-08-30 01:22 UTCEPSS rescoreEPSS 0.8% · 52nd percentile
  36. 2026-08-28 21:41 UTCEPSS rescoreEPSS 0.8% · 52nd percentile
  37. 2026-08-27 21:45 UTCEG score recompute
  38. 2026-08-27 21:45 UTCGHSA enrichmentGHSA-qcqf-phv4-c959 · GitHub CVSS 6.5
  39. 2026-08-27 14:25 UTCEPSS rescoreEPSS 0.8% · 52nd percentile
  40. 2026-08-26 14:46 UTCEPSS rescoreEPSS 0.8% · 52nd percentile
  41. 2026-08-26 04:42 UTCEG score recompute
  42. 2026-08-26 04:42 UTCGHSA enrichmentGHSA-qcqf-phv4-c959 · GitHub CVSS 6.5
  43. 2026-08-25 13:48 UTCEPSS rescoreEPSS 0.8% · 52nd percentile
  44. 2026-08-25 04:03 UTCEG score recompute
  45. 2026-08-25 04:03 UTCGHSA enrichmentGHSA-qcqf-phv4-c959 · GitHub CVSS 6.5
  46. 2026-08-24 03:59 UTCGHSA enrichmentGHSA-qcqf-phv4-c959 · GitHub CVSS 6.5
  47. 2026-08-23 02:10 UTCEG score recompute
  48. 2026-08-23 02:10 UTCGHSA enrichmentGHSA-qcqf-phv4-c959 · GitHub CVSS 6.5
  49. 2026-08-23 00:19 UTCEPSS rescoreEPSS 0.6% · 44th percentile
  50. 2026-08-22 02:08 UTCEG score recompute
  51. 2026-08-22 02:07 UTCGHSA enrichmentGHSA-qcqf-phv4-c959 · GitHub CVSS 6.5
  52. 2026-08-21 23:49 UTCEPSS rescoreEPSS 0.6% · 44th percentile
  53. 2026-08-21 02:04 UTCEG score recompute
  54. 2026-08-21 02:04 UTCGHSA enrichmentGHSA-qcqf-phv4-c959 · GitHub CVSS 6.5
  55. 2026-08-20 22:55 UTCEPSS rescoreEPSS 0.6% · 44th percentile
  56. 2026-08-20 01:47 UTCEG score recompute
  57. 2026-08-20 01:47 UTCGHSA enrichmentGHSA-qcqf-phv4-c959 · GitHub CVSS 6.5
  58. 2026-08-19 17:03 UTCEPSS rescoreEPSS 0.6% · 44th percentile
  59. 2026-08-18 22:27 UTCEG score recompute
  60. 2026-08-18 22:27 UTCGHSA enrichmentGHSA-qcqf-phv4-c959 · GitHub CVSS 6.5
  61. 2026-08-18 13:48 UTCEPSS rescoreEPSS 0.6% · 44th percentile
  62. 2026-08-17 22:17 UTCEG score recompute
  63. 2026-08-17 22:17 UTCGHSA enrichmentGHSA-qcqf-phv4-c959 · GitHub CVSS 6.5
  64. 2026-08-17 13:47 UTCEPSS rescoreEPSS 0.6% · 44th percentile
  65. 2026-08-16 17:58 UTCEG score recompute
  66. 2026-08-16 17:58 UTCGHSA enrichmentGHSA-qcqf-phv4-c959 · GitHub CVSS 6.5
  67. 2026-08-16 14:56 UTCEPSS rescoreEPSS 0.6% · 44th percentile
  68. 2026-08-16 02:14 UTCEPSS rescoreEPSS 0.6% · 44th percentile
  69. 2026-08-15 17:28 UTCEG score recompute
  70. 2026-08-15 17:28 UTCGHSA enrichmentGHSA-qcqf-phv4-c959 · GitHub CVSS 6.5
  71. 2026-08-15 01:30 UTCEPSS rescoreEPSS 0.6% · 44th percentile
  72. 2026-08-14 17:26 UTCEG score recompute
  73. 2026-08-14 17:26 UTCGHSA enrichmentGHSA-qcqf-phv4-c959 · GitHub CVSS 6.5
  74. 2026-08-13 22:00 UTCEPSS rescoreEPSS 0.6% · 44th percentile
  75. 2026-08-13 17:07 UTCGHSA enrichmentGHSA-qcqf-phv4-c959 · GitHub CVSS 6.5

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Frequently asked(5)

What is CVE-2026-15192?
CVE-2026-15192 is a medium-severity vulnerability; its CVE record was 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 the CVE record for CVE-2026-15192 published?
The CVE record for CVE-2026-15192 was published on July 9, 2026. That is the record's publication date; the vulnerability itself may have been made public earlier. EchelonGraph's copy of the record carries a last-modified date of September 3, 2026; the record at its source may have been updated since.
Is CVE-2026-15192 actively exploited?
CVE-2026-15192 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.8% probability of exploitation in the next 30 days (54th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-15192?
CVE-2026-15192 has a CVSS base score of 6.5 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-15192?
No fix for CVE-2026-15192 is confirmed yet. Until one is published, restrict network exposure of the affected system or apply the vendor's mitigation — for example, keep it off the internet or limit it to trusted networks — and watch the vendor's advisory for the fix. The CVE record's description, written by its CNA (VulDB), states the affected versions: "A vulnerability has been found in mettle sendportal up to 3.0.1." No release containing a fix is confirmed on record. The vendor advisories EchelonGraph has for CVE-2026-15192 are linked in the Vendor Advisories panel on this page.

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