In Octopus Deploy 2018.8.0 through 2018.9.x before 2018.9.1, an authenticated user with…
Priority MEDIUM 52Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.0 · NVD. Fix status from CNA.
Summary
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).
Why it matters now
EPSS 0.12475 96th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:octopus:octopus_server:*:*:*:*:*:*:*:* | 2018.8.0 – 2018.8.12; 2018.9.0 to before 2018.9.1 | Vulnerable | Octopus Deploy |
- cpe:2.3:a:octopus:octopus_server:*:*:*:*:*:*:*:* Versions 2018.8.0 – 2018.8.12; 2018.9.0 to before 2018.9.1 Vulnerable ·Octopus Deploy
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2018-18850
- 2026-10-03 Alias added: GHSA-483m-372f-vxc5
References
More Octopus Deploy Octopus Server vulnerabilities
- TI-2022-02375 Improper authentication in Octopus Server CVSS 3.1CRITICAL 9.8
- TI-2022-02579 Insufficient session expiration in Octopus Server CVSS 3.1CRITICAL 9.1
- TI-2018-08066 In Octopus Deploy 2018.4.4 through 2018.5.1, Octopus variables that are sourced from the… CVSS 3.0CRITICAL 9.8
- TI-2022-02575 In affected versions of Octopus Deploy it is possible to bypass rate limiting on login using null bytes. CVSS 3.1CRITICAL 9.8
- TI-2022-03678 In affected versions of Octopus Deploy it is possible for a user to introduce code via offline package creation CVSS 3.1HIGH 8.8
- TI-2022-02673 Unrestricted file upload in Octopus Server CVSS 3.1HIGH 7.5
Sources
- CVE-2018-18850 · CVE Program
- CVE-2018-18850 · NVD
- FIRST EPSS
- GHSA-483m-372f-vxc5 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences