Vulnerability · Published Mar 17, 2026 · Assigned by Octopus
CVE-2026-3237
Low 2.3
In plain English
A low-severity security flaw in Octopus Server from Octopus Deploy. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 5% of all known vulnerabilities).
Severity (CVSS 4.0)2.3Low
Exploit odds (30 days)0.2%top 94.6% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Octopus Deploy | Octopus Server | 2023.0.0 – before 2025.3.147312025.4.0 – before 2025.4.103592026.1.0 – before 2026.1.5571 |
Weakness: CWE-285 · Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N