CVE-2026-124628

Vulnerability record

  • High 8.7

Description

In affected versions of Octopus Server, incorrect validation of changes a user made to their own LDAP identity allowed them to edit that identity even when an Administrator had disabled self-service identity editing. This could result in the user gaining membership of teams mapped to external LDAP groups they do not belong to, and potentially escalating to full administrative privileges if any of those teams are privileged.

Key facts

Published
12 Nov 2026
Last changed
12 Nov 2026
Assigned by
Octopus
EPSS
0.207% likely to be exploited in the next 30 days, higher than 10.879% of CVEs (scores for 15 Nov 2026)

Severity scores

Each score is shown as its source gave it. They are not averaged or merged.

  • 8.7CVSS 4.0, Highfrom the CNA (Octopus)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

Historical context and remediation

This reference retains the original CVE publication date. A recent record update does not mean a new attack occurred.

No separately sourced impact summary is available on this page yet. Consult the description, version data and dated exploitation evidence.

No explicit remediation statement is available on this page yet. Consult the original record and vendor references before choosing a fix.

Version statuses below come from the CNA. An “unaffected” version is not necessarily a currently supported release or proof of a patch date. EPSS is a dated risk estimate, not a count of historical attacks.

Read the original CVE record.

Affected products

VendorProductVersions
Octopus DeployOctopus Server
  • Default status: unaffected
  • 2018.3.0 up to but excluding 2026.2.13526 (affected)
  • 2026.3.0 up to but excluding 2026.3.15936 (affected)

Timeline

  1. 12 Nov 2026 Published

Weakness

References