API Manipulation Vulnerability in Octopus Server by Octopus Deploy
CVE-2026-3237

2.3LOW

Key Information:

Vendor

Octopus Deploy

Status
Octopus Server
Vendor
CVE Published:
17 March 2026

What is CVE-2026-3237?

A vulnerability exists in Octopus Server that allows low-privileged users to manipulate API requests due to improper permission validation. This flaw enables unauthorized changes to the signing key expiration and revocation time frames through a specific API endpoint. However, it should be noted that the signing keys themselves are not exposed through this vulnerability.

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Deploy the Patch

Affected Version(s)

Octopus Server Windows 2023.0.0 < 2025.3.14731

Octopus Server Windows 2025.4.0 < 2025.4.10359

Octopus Server Windows 2026.1.0 < 2026.1.5571

References

https://advisories.octopus.com/post/2026/sa2026-03

CVSS V4

Score:
2.3
Severity:
LOW
Confidentiality:
None
Integrity:
Low
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
Physical
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

This vulnerability was found by raihanadiarba
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