How severe is CVE-2018-19367?

CVE-2018-19367 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2018-19367 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (71st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-19367?

CVE-2018-19367 affects Portainer. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-19367?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2018-19367 published?

CVE-2018-19367 was published on 2018-11-20 and last updated on 2026-06-17.

CVE-2018-19367

CVE-2018-19367 is a critical-severity vulnerability in Portainer with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 5.0
EPSS exploit prediction: 1% (71st percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Portainer
Published: 2018-11-20
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is CVE-2018-19367?: 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.
How severe is CVE-2018-19367?: CVE-2018-19367 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2018-19367 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (71st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-19367?: CVE-2018-19367 affects Portainer. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-19367?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2018-19367 published?: CVE-2018-19367 was published on 2018-11-20 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:portainer:portainer:*:*:*:*:*:*:*:*

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