CVE-2026-102478

CVE-2026-102478 is a high-severity vulnerability with a CVSS 4.0 base score of 8.7. The underlying weakness is classified as CWE-1289.

Key facts

Description

In affected versions of Octopus Server, an authenticated user with permission to modify roles could bypass the protections preventing access abuse resulting in privilege escalation. It was possible for the built-in role to be weakened and the attacker's account added to a privileged team. This was achievable due to improper validation of unsafe equivalence in inputs.

Frequently asked questions

What is CVE-2026-102478?
In affected versions of Octopus Server, an authenticated user with permission to modify roles could bypass the protections preventing access abuse resulting in privilege escalation. It was possible for the built-in role to be weakened and the attacker's account added to a privileged team. This was achievable due to improper validation of unsafe equivalence in inputs.
How severe is CVE-2026-102478?
CVE-2026-102478 has a CVSS 4.0 base score of 8.7, rated high severity.
Is CVE-2026-102478 being actively exploited?
It is not currently listed in CISA's Known Exploited Vulnerabilities catalog, and no EPSS exploit-prediction score is available yet.
How do I fix CVE-2026-102478?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2026-102478 published?
CVE-2026-102478 was published on 2026-10-07.

References

Other CWE-1289 vulnerabilities

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