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CVE-2026-124627 octopus deploy octopus server: Incorrect Authorization

8.7 highEPSS 0.3%

High (8.7) in octopus deploy octopus server. EPSS 0.3% estimated probability of exploitation activity in the next 30 days.

On this page
In affected versions of Octopus Server, incorrect validation of the external identity linked to a newly registered user could result in that user receiving the LDAP-mapped team memberships and associated permissions of another user. This issue only affects instances with LDAP authentication enabled and LDAP groups mapped to Octopus teams.

Severity

CVSS 4.0

8.7 high
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
EPSS
0.3% estimated probability of exploitation activity in the next 30 days; 22nd percentile. Scored 2026-11-13. A forecast for this CVE across the internet, not for your own systems.
CWE
CWE-863 Incorrect Authorization
OWASP Top 10
A01:2025 Broken Access Control
Published
Modified
Assigned by
Octopus (CNA)
NVD analysis
Awaiting analysis
Record from
the NVD, synced

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Affected

  • octopus deploy:octopus server

Versions

From the CNA's record in the CVE List.

ProductAffected
Octopus Deploy Octopus Serverfrom 3.0.0 before 2026.2.13526
Octopus Deploy Octopus Serverfrom 2026.3.0 before 2026.3.15926

References

Check your stackJSON