CVE-2026-91778High· 7.2▾ TwilightIn 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 a…
▾ Twilight zone — High severity, or a signal on a lesser flaw
impact 39.6 · likelihood 0.1 · exploitation 0
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Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake. The CVSS score shown above comes from the assigning CNA record, not NVD.
Exploit-prediction probability, daily snapshots since Sep 15.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via NVD
0.3%
Last analysed / modified upstream
0.3% → 0.4%
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.
Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Connected by shared product, vendor, weakness, or advisory.
CVE-2026-102488High· 8.7In affected versions, Octopus Server incorrectly evaluates multiple scoped permission assignments, allowing a highly privileged user to obtain deployment permissions beyond those actually granted to them.
CVE-2026-78210High· 7.1In affected versions of Octopus Server, users with certain scoped permission sets could execute arbitrary scripts in an environment without possessing the required authorization.
CVE-2026-118426Medium· 5.3In affected versions of Octopus Server with the LDAP authentication provider enabled, any authenticated user could call the LDAP user search and LDAP group search.
CVE-2026-12887Medium· 5.1In affected versions of Octopus Server, a user with permission to upload a malicious nuget package is able to deploy a script step so the script executes outside of the parent directory.
CVE-2026-116870High· 8.7In affected versions of Octopus Server, OIDC token issuer validation was performed inconsistently
CVE-2026-117466High· 8.6In affected versions of Octopus Server, a user holding the System Manager role could escalate their privileges to full system Administrator.