CVE-2018-12678

9.8 criticalEPSS 2.3%

Portainer before 1.18.0 supports unauthenticated requests to the websocket endpoint with an unvalidated id query parameter for the /websocket/exec endpoint, which allows remote attackers to bypass intended access restrictions or conduct SSRF attacks.

Severity

CVSS 3.0

9.8 critical

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS: 2.3% chance of exploitation in the next 30 days; higher than 83% of CVEs (scores of 2026-10-31)
CWE: CWE-918
Published: 2018-06-22
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

portainer:portainer

References

https://github.com/portainer/portainer/pull/1979
https://github.com/portainer/portainer/releases/tag/1.18.0
https://github.com/portainer/portainer/pull/1979
https://github.com/portainer/portainer/releases/tag/1.18.0

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