CVE-2018-18850

8.8 highEPSS 12%

In Octopus Deploy 2018.8.0 through 2018.9.x before 2018.9.1, an authenticated user with permission to modify deployment processes could upload a maliciously crafted YAML configuration, potentially allowing for remote execution of arbitrary code, running in the same context as the Octopus Server (for self-hosted installations by default, SYSTEM).

Severity

CVSS 3.0

8.8 high

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

EPSS: 12% chance of exploitation in the next 30 days; higher than 96% of CVEs (scores of 2026-10-31)
Published: 2018-10-31
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

octopus:octopus_server

References

https://github.com/OctopusDeploy/Issues/issues/5042
https://github.com/OctopusDeploy/Issues/issues/5042

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