Is CVE-2026-78210 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-78210 being exploited in the wild.

How severe is CVE-2026-78210?

Informational severity, published 1 October 2026.

Which products and versions are affected?

Octopus Deploy Octopus Server 2019.x after 2019.5.9; all 2020.x, 2021.x, 2022.x, 2023.x, 2024.x, 2025.x; 2026.1.x before 2026.1.11739; 2026.2.x before 2026.2.13364; 2026.3.x before 2026.3.13951.

Is there a fix for CVE-2026-78210?

Yes: fixed in 2026.1.11739, 2026.2.13364, 2026.3.13951. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

How is CVE-2026-78210 attacked?

It is attacked over the network, in a hosted service.

Am I affected by CVE-2026-78210?

Check whether you run Octopus Deploy Octopus Server at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-78210: Octopus Server authorization bypass in script execution

CVE-2026-78210 · Severity: info · Published 2026-10-01

Octopus Server is a deployment and release management platform used to automate application releases across infrastructure. A flaw allows users with limited permissions to execute arbitrary scripts in environments they should not have access to, potentially enabling unauthorized system changes or data access. The vulnerability affects multiple versions and should be patched immediately.

Technologies: Octopus Deploy Octopus Server. Vendors: Octopus Deploy.

Quick answers

Is CVE-2026-78210 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-78210 being exploited in the wild.
How severe is CVE-2026-78210?: Informational severity, published 1 October 2026.
Which products and versions are affected?: Octopus Deploy Octopus Server 2019.x after 2019.5.9; all 2020.x, 2021.x, 2022.x, 2023.x, 2024.x, 2025.x; 2026.1.x before 2026.1.11739; 2026.2.x before 2026.2.13364; 2026.3.x before 2026.3.13951.
Is there a fix for CVE-2026-78210?: Yes: fixed in 2026.1.11739, 2026.2.13364, 2026.3.13951. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-78210 attacked?: It is attacked over the network, in a hosted service.
Am I affected by CVE-2026-78210?: Check whether you run Octopus Deploy Octopus Server at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

Fixed in: 2026.1.11739, 2026.2.13364, 2026.3.13951

Technical details

An authorization bypass vulnerability in Octopus Server permits users with certain scoped permission sets to execute arbitrary scripts in environments without the required authorization level. This is an access control flaw affecting deployment and script execution workflows. A fix is available in 2026.1.11739, 2026.2.13364, 2026.3.13951, and later versions.

Affected products

Octopus Deploy Octopus Server 2019.x after 2019.5.9; all 2020.x, 2021.x, 2022.x, 2023.x, 2024.x, 2025.x; 2026.1.x before 2026.1.11739; 2026.2.x before 2026.2.13364; 2026.3.x before 2026.3.13951

Timeline

2026-08-17: disclosed: Discovery date (internal testing)
2026-08-24: patched: Patch release date
2026-09-30: advisory: Advisory release date

References

https://advisories.octopus.com/post/2026/sa2026-13

This page as Markdown. Free to reuse under CC BY 4.0 with a link back.