Signing-key setting changes via incorrect permission validation
Published Mar 17, 2026 · Updated Mar 17, 2026
Improper authorization in Octopus Server allows remote authenticated users to alter signing-key expiration and revocation time frames. A signing-key settings API endpoint accepts manipulated requests from low-privileged accounts because it applies incorrect permission validation. Low-privileged API access is required; the flaw changes global timing settings but does not expose signing keys.
Summary
What happened
Improper authorization in Octopus Server allows remote authenticated users to alter signing-key expiration and revocation time frames. A signing-key settings API endpoint accepts manipulated requests from low-privileged accounts because it applies incorrect permission validation. Low-privileged API access is required; the flaw changes global timing settings but does not expose signing keys.
The record
- CVE
- CVE-2026-3237
- Published
- Mar 17, 2026
- Updated
- Mar 17, 2026
- Vendor
- Octopus Deploy
- Product
- Octopus Server
- Classifications
- CWE-285, T1556
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Mar 17, 2026CVE publishedPublication date reported by the CVE source.
- Mar 17, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
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- Affected versionversion=2023.0.0 <2025.3.14731
- Affected versionversion=2025.4.0 <2025.4.10359
- Affected versionversion=2026.1.0 <2026.1.5571
What conditions does exploitation require?
What is affected?
Published CVSS scores
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Attacks
What attackers are doing with it
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Public exploit references
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Technologies
Your stack
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Your stack
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