CVE-2026-4881

State: Published
Severity: 6.0 Medium
Published: Jun 4, 2026
Updated: Jun 4, 2026
Reserved: Mar 26, 2026

Description

In affected versions of Octopus Server, permissions were not checked correctly resulting in any authenticated user being able to make server level changes using a certain API endpoint despite receiving an error.

Scores

CVSS	Score	Vector	Source
4.0	6.0 Medium	CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N	Octopus

Weaknesses

CWE-862 Missing Authorization

Affected Products

Product	Versions
Octopus ServerOctopus Deploy	2023.0.0 to before 2025.4.10523Affected 2025.4.0 to before 2025.4.10545Affected 2026.1.0 to before 2026.1.11313Affected

References

https://advisories.octopus.com/post/2026/sa2026-04

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