CVE-2026-3236

Severity: medium (CVSS 4.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-03-05 · updated 2026-06-17
Weakness: CWE-863

Description

In affected versions of Octopus Server it was possible to create a new API key from an existing access token resulting in the new API key having a lifetime exceeding the original API key used to mint the access token.

Affected products

Octopus Deploy Octopus Server: from 2023.1.4189 before 2025.3.14761; from 2025.4.51 before 2025.4.10409 — fixed in 2025.3.14761, 2025.4.10409

How to fix

Upgrade to a fixed version: Octopus Deploy Octopus Server 2025.3.14761, 2025.4.10409. Check the vendor advisory for mitigations.

References

https://advisories.octopus.com/post/2026/sa2026-02

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