CVE-2026-4881

Improper Permission Checks Allow Server‑Level Configuration Changes via API

Published Jun 4, 2026 CVSS 4.0 · 6 Medium EPSS < 1% KEV · Not listed
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.

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
Title Improper Permission Checks Allow Server‑Level Configuration Changes via API
Type Values Removed Values Added
Title Authenticated User Can Perform Server‑Level Changes via API in Octopus Server
Weaknesses CWE-285
Type Values Removed Values Added
Weaknesses CWE-862
Metrics ssvc

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

Type Values Removed Values Added
Title Authenticated User Can Perform Server‑Level Changes via API in Octopus Server
Weaknesses CWE-285
Type Values Removed Values Added
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.
References
Metrics cvssV4_0

{'score': 6, 'vector': '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'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
Octopus
Published
Updated
Jun 4, 2026, 1:05 PM
Reserved
Mar 26, 2026, 7:19 AM
Status
Analyzed
Published
Jun 4, 2026, 10:16 AM
Modified
Jul 22, 2026, 8:10 PM