CVE-2018-19367

CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2022-05-13. NVD baseline CVSS 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
9.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 9.8Exploit: None knownExposed: 0

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

Portainer through 1.19.2 provides an API endpoint (/api/users/admin/check) to verify that the admin user is already created. This API endpoint will return 404 if admin was not created and 204 if it was already created. Attackers can set an admin password in the 404 case.

CVSS v3
9.8
EG Score
9.8(medium)
EG Risk
49(Track)
EG Risk 49/100SSVC: Track

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
Severity98% × 45%
Exploitation1% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
72%
KEV
Not listed

Published

November 20, 2018

Last Modified

November 21, 2024

Advisory Details (2)

Auto-updated Aug 19, 2026
🔬 Proof of concept available. No patch confirmed yet.
generic🟡 PoC Available

Responsible Disclosure - Check if admin already created by a public API endpoint · Issue #2475 · portainer/portainer · GitHub

https://github.com/portainer/portainer/issues/2475
generic🟡 PoC Available

GitHub - lichti/shodan-portainer: This script search at shodan for portainer poorly configured and vulnerable · GitHub

https://github.com/lichti/shodan-portainer/

Data Freshness Timeline

(refreshed 7× in last 7d / 28× 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.

Showing the most recent 100 of 130 total refreshes for this CVE.

  1. 2026-08-21 23:45 UTCEPSS rescore
  2. 2026-08-20 22:51 UTCEPSS rescore
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  4. 2026-07-23 01:35 UTCEG score recompute
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  8. 2026-07-21 02:47 UTCOSV refresh
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  68. 2026-06-15 09:43 UTCOSV refresh
  69. 2026-06-14 23:15 UTCEPSS rescore
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  74. 2026-06-11 13:57 UTCEPSS rescore
  75. 2026-06-10 22:16 UTCEPSS rescore

Frequently asked(5)

What is CVE-2018-19367?
CVE-2018-19367 is a critical vulnerability published on November 20, 2018. Portainer through 1.19.2 provides an API endpoint (/api/users/admin/check) to verify that the admin user is already created. This API endpoint will return 404 if admin was not created and 204 if it was already created. Attackers can set an admin password in the 404 case.
When was CVE-2018-19367 disclosed?
CVE-2018-19367 was first published in the National Vulnerability Database on November 20, 2018, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2018-19367 actively exploited?
CVE-2018-19367 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 28.3% of all scored CVEs.
What is the CVSS score of CVE-2018-19367?
CVE-2018-19367 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2018-19367?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2018-19367, 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.

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