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MEDIUM · 6.5

CVE-2026-4881

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 receivin...

Vulnerability 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.

CVSS Score

6.5

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH

Affected Products

VendorProductVersions
OctopusOctopus Server>= 2023.1.4189, < 2025.4.10545

Related Weaknesses (CWE)

CWE-862

References

FAQ

What is CVE-2026-4881?

CVE-2026-4881 is a vulnerability with a CVSS score of 6.5 (MEDIUM). 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 receivin...

How severe is CVE-2026-4881?

CVE-2026-4881 has been rated MEDIUM with a CVSS base score of 6.5/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-4881?

Check the references section above for vendor advisories and patch information. Affected products include: Octopus Octopus Server.