CVE-2026-78210
In affected versions of Octopus Server, users with certain scoped permission sets could execute arbitrary scripts in an environment without possessing the required authorization.
Octopus Deploy Octopus Server
CVSS
7.1HighExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)0.26%Chance of exploitation activity in the next 30 days, higher than 16% of CVEs. Scored 23 Oct 2026FIRST EPSS
What fixes it
- 2026.1.11739Octopus ServerCVE List
- 2026.2.13364Octopus ServerCVE List
- 2026.3.13951Octopus ServerCVE List
A fixed version on one release line is not the upgrade target for every line. Check your exact version and any vendor backports.
Affected versions 3
- Octopus Serveraffected: 2019.5.9 before 2026.1.11739CVE List
- Octopus Serveraffected: 2026.2.0 before 2026.2.13364CVE List
- Octopus Serveraffected: 2026.3.0 before 2026.3.13951CVE List