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VulnerabilityPublished

CVE-2026-124628: Octopus Server · Incorrect Authorization

Affects Octopus ServerSource CVE Database V5

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Not known to be exploited · CVSS 8.7 High : upgrade to 2026.3.15936 or 2026.2.13526 soon.

Data as of 12 Nov 2026, 13:49 UTC

CVSS 4.0 base score
8.7High
How severe the flaw is on the 0–10 CVSS scale.

Thin evidence

One scorer or none
CVSS scores by source
CNA (Octopus)CVSS 4.08.7
Patch
Available – fixed in 2026.3.15936, 2026.2.13526
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

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 12 Nov 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 12 Nov 2026.

What to do

Upgrade Octopus Server to 2026.3.15936 or 2026.2.13526.

Affected software

ProductAffectedFixed in
Octopus DeployOctopus ServerAffected
  • >=2026.3.0 <2026.3.15936
Fixed in
  • 2026.3.15936
Octopus DeployOctopus ServerAffected
  • >=2018.3.0 <2026.2.13526
Fixed in
  • 2026.2.13526

AI-suggested

Fixed versions 2026.2.13526 and 2026.3.15936 address this vulnerability. Users should upgrade to these or later versions to remediate the issue. No additional mitigation steps are indicated by the vendor advisory.

Description

CVE-2026-124628 is a high-severity vulnerability in Octopus Server where users could bypass restrictions on self-service LDAP identity editing. This flaw allowed users to modify their LDAP identity even when administrators had disabled such edits, potentially granting unauthorized team memberships and escalating privileges to administrative levels if those teams had elevated rights. The issue affects specific versions of Octopus Server prior to fixed releases in 2026.3.15936 and 2026.2.13526.

References

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