CVE-2026-101169

Authenticated Insecure Deserialization Enables Arbitrary Code Execution in Octopus Server

Published Sep 29, 2026 CVSS 4.0 · 8.7 High EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Octopus
Octopus octopus Server
Vendors & Products Octopus
Octopus octopus Server
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

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

Weaknesses

Sources

Status
PUBLISHED
Assigner
Octopus
Published
Updated
Sep 29, 2026, 4:46 PM
Reserved
Sep 28, 2026, 9:09 AM
Status
Awaiting Analysis
Published
Sep 29, 2026, 8:17 AM
Modified
Sep 29, 2026, 9:27 PM