CVE-2026-4881

EUVD-2026-34227
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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
6.5 MEDIUM
NETWORK
LOW
LOW
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: 11%
Affected Products (NVD)
VendorProductVersion
octopusoctopus_server
2023.1.4189 ≤
𝑥
< 2025.4.10545
octopusoctopus_server
2026.1.675 ≤
𝑥
< 2026.1.11313
𝑥
= Vulnerable software versions
Common Weakness Enumeration
References
https://advisories.octopus.com/post/2026/sa2026-04