CyberSecBulletin
CVE-2026-96414NVD status: Awaiting Analysis

Octopus Server: Reliance on Obfuscation or Encryption of Security-Relevant Inputs without Integrity Checking

Published Updated By the CyberSecBulletin desk

CVE-2026-96414 is a high-severity reliance on obfuscation or encryption of security-relevant inputs without integrity checking vulnerability in Octopus Server from Octopus Deploy, with a CVSS 4.0 base score of 8.7 out of 10. It can be exploited remotely over the network by an attacker with a low-privileged account, without any action from a user. The record lists versions 2026.2.13487, 2026.3.15875 as the first without the flaw, so updating Octopus Server to one of those releases or later removes the exposure. There is no confirmed exploitation so far. EPSS estimates a 0.22% chance of exploitation within 30 days, which is low compared with other CVEs.

Next patch cycle

High severity with no evidence of exploitation so far.

What to do

  1. Update Octopus Server to 2026.2.13487 or 2026.3.15875, whichever matches your release line, or a later version.

Affected products and versions

VendorProductAffected versionsFixed in
Octopus DeployOctopus Server2022.1.3143 up to, but not including, 2026.2.13487; 2026.3.0 up to, but not including, 2026.3.158752026.2.13487, 2026.3.15875

Version data comes from the organisation that assigned the CVE. Confirm against the vendor advisory before deciding you are unaffected.

How the severity score breaks down

Attack vector
NetworkCan be exploited remotely over a network, including the internet.
Attack complexity
LowNo special conditions are needed; the attack works reliably.
Attack requirements
NoneThe attack does not depend on a particular deployment or configuration.
Privileges required
LowA basic user account is enough.
User interaction
NoneNo action by a victim is required.
Confidentiality (vulnerable system)
HighSerious loss of confidentiality on the vulnerable system.
Integrity (vulnerable system)
HighSerious loss of integrity on the vulnerable system.
Availability (vulnerable system)
HighSerious loss of availability on the vulnerable system.
Confidentiality (other systems)
NoneNo loss of confidentiality on systems beyond the vulnerable one.
Integrity (other systems)
NoneNo loss of integrity on systems beyond the vulnerable one.
Availability (other systems)
NoneNo loss of availability on systems beyond the vulnerable one.

Vector: 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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X. Scored by CNA (octopus.com).

Official 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.

Source: the CVE record as published by its numbering authority, via NVD and CVE.org.

The underlying weakness: Reliance on Obfuscation or Encryption of Security-Relevant Inputs without Integrity Checking

The product uses obfuscation or encryption of inputs that should not be mutable by an external actor, but the product does not use integrity checks to detect if those inputs have been modified.

How developers prevent this class of flaw

  • Protect important client controllable tokens/parameters for integrity using PKI methods (i.e. digital signatures) or other means, and checks for integrity on the server side.
  • Repeated requests from a particular user that include invalid values of tokens/parameters (those that should not be changed manually by users) should result in the user account lockout.
  • Client side tokens/parameters should not be such that it would be easy/predictable to guess another valid state.

More Reliance on Obfuscation or Encryption of Security-Relevant Inputs without Integrity Checking vulnerabilities (CWE-649)

Timeline

  1. CVE record published.
  2. Record last changed materially (score, affected products, status or references).

References

Other vulnerabilities in Octopus Server

All Octopus Server vulnerabilities

Recent Reliance on Obfuscation or Encryption of Security-Relevant Inputs without Integrity Checking vulnerabilities

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