Home/CVE/In affected versions of Octopus Server it was possible for a low privileged user to manipulate an API request to change
CVE

CVE-2026-3237

In affected versions of Octopus Server it was possible for a low privileged user to manipulate an API request to change

In affected versions of Octopus Server it was possible for a low privileged user to manipulate an API request to change the signing key expiration and revocation time frames via an API endpoint that had incorrect permission validation. It was not possible to expose the signing keys using this vulnerability.

MEDIUM · CVSS 4.3 EPSS 0.00042
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  • No active-exploitation, high-EPSS, or public-exploit signals - routine patching cadence
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-285Improper Authorization
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Affected Products & Versions

3
octopus server< 2025.3.14731
octopus server>= 2025.4.51 and < 2025.4.10359
octopus server>= 2026.1.675 and < 2026.1.5571
▣

Scoring & Timeline

4.3
MEDIUM · CVSS v3.1 · security@octopus.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD17 Mar 2026 · 07:16 AM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
SSVC triage · cisa-vulnrichment
Exploitation
none
Automatable
no
Technical impact
partial
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
🔗

References & Sources

1
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://advisories.octopus.com/post/2026/sa2026-03Vendor Advisory
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