CVE-2026-101169

State: Published
Severity: 8.7 High
Published: Sep 29, 2026
Updated: Sep 29, 2026
Reserved: Sep 28, 2026

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.

Scores

CVSS	Score	Vector	Source
4.0	8.7 High	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	Octopus

Weaknesses

CWE-502 Deserialization of Untrusted Data

Affected Products

Product	Versions
Octopus ServerOctopus Deploy	2019.4.1 to before 2026.1.11781Affected 2026.2.0 to before 2026.2.13441Affected 2026.3.0 to before 2026.3.15829Affected

References

https://advisories.octopus.com/post/2026/sa2026-10

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