CVE-2026-91778

Summary

In affected versions of Octopus Server, users with certain scoped permission sets could execute arbitrary scripts on a worker (including the Octopus Server built-in worker). Incorrect permission validation during script execution would allow the script to execute without the user possessing the required authorisation.

Affected Software

VendorProductVersion RangeStatus
Octopus DeployOctopus Server2019.0.0 < 2026.1.11725affected
Octopus DeployOctopus Server2026.2.0 < 2026.2.13344affected
Octopus DeployOctopus Server2026.3.0 < 2026.3.11816affected

Weaknesses

  • CWE-863: CWE-863: Incorrect Authorization

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: no
    • Technical Impact: total

References