In affected versions of Octopus Server, an authenticated user with permissions to edit an Environment or Project can set specifically crafted JSON content for the object. Insecure deserialization of this content allows the user to execute arbitrary code in the Octopus Server process.

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact High

Vulnerable System Integrity Impact High

Vulnerable System Availability Impact High

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00334.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Octopus Deploy Octopus Server unaffected
Version Status Constraints
2019.4.1 affected < 2026.1.11781
2026.2.0 affected < 2026.2.13441
2026.3.0 affected < 2026.3.15829

No data.

No data.

OpenCVE Enrichment is a feature of OpenCVE that uses AI to automatically link vendors and products to CVEs. Learn more on GitHub.

No data.

Project Subscriptions

No data.

Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://advisories.octopus.com/post/2026/sa2026-10 cve-icon cve-icon
History

Tue, 29 Sep 2026 13:15:00 +0000

Type Values Removed Values Added
Title Authenticated Insecure Deserialization Enables Arbitrary Code Execution in Octopus Server

Tue, 29 Sep 2026 08:00:00 +0000

Type Values Removed Values Added
Description In affected versions of Octopus Server, an authenticated user with permissions to edit an Environment or Project can set specifically crafted JSON content for the object. Insecure deserialization of this content allows the user to execute arbitrary code in the Octopus Server process.
Weaknesses CWE-502
References
Metrics cvssV4_0

{'score': 8.7, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N'}

Projects

Sign in to view the affected projects.

cve-icon MITRE

Status: PUBLISHED

Assigner: Octopus

Published:

Updated: 2026-09-29T07:49:29.618Z

Reserved: 2026-09-28T09:09:50.229Z

Link: CVE-2026-101169

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-09-29T08:17:19.823

Modified: 2026-09-29T08:17:19.823

Link: CVE-2026-101169

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-09-29T10:00:16Z

Weaknesses