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UK Cyber Defence
VulnerabilityAnalyzed

CVE-2026-3237

It was not possible to expose the signing keys using this vulnerability.

LOW 2.3EPSS 0.15%

Does this matter?

Lower severity and a low EPSS score (0.15%). Track it; it rarely justifies an emergency change on its own.

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.

CVSS 4.0
2.3 LOWCVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M
EPSS
0.15% probability · 5th percentile
CISA KEV
Not listed
Weakness
CWE-285
Affected
octopus/octopus server
Source
security@octopus.com

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.