CVE-2026-96414 | BDVDB-2026-404748 Detail

Octopus DeployOctopus Server

Description#

In affected versions of Octopus Server, insufficient integrity protection of authentication cookies, combined with incorrect validation of permissions assigned to a user that allowed them to view users or audit events, could result in the user escalating their privileges to those of an Administrator.

Impact#

Per CVSS v4.0: confidentiality impact high, integrity impact high, availability impact high. Attack vector: network.

Weaknesses#

CWE-649 Reliance on Obfuscation or Encryption of Security-Relevant Inputs without Integrity Checking

References#

https://advisories.octopus.com/post/2026/sa2026-19

Exploit#

No public exploit known

History#

Version 12026-11-11Record published in the CVE List.

Published

Published: 2026-11-11
Last modified: 2026-11-11

Vendor information

Vendor: Octopus Deploy
Product: Octopus Server

All Octopus Deploy vulnerabilities

Score

8.7 High

EPSS

Not available

KEV

Not listed in the CISA Known Exploited Vulnerabilities catalog.

Impact

Not classified

Action

No specific action is recorded in the source data. Check the references for vendor guidance.

Affected Systems

Vulnerable
>= 2022.1.3143 and < 2026.2.13487
Fixed
2026.2.13487
Vulnerable
>= 2026.3.0 and < 2026.3.15875
Fixed
2026.3.15875

Scoring System

CVSS v4.0

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

Metric breakdown
Attack Vector	Network
Attack Complexity	Low
Attack Requirements	None
Privileges Required	Low
User Interaction	None
Vulnerable System Confidentiality	High
Vulnerable System Integrity	High
Vulnerable System Availability	High
Subsequent System Confidentiality	None
Subsequent System Integrity	None
Subsequent System Availability	None

CVSS v3.1

Not available

CVSS v3.0

Not available

CVSS v2

Not available

Source: CVE List v5 (record); CISA KEV (kev, action); FIRST EPSS (epss).