---
id: CVE-2026-78560
title: >-
  The Okta Access Gateway includes an optional pass-through authentication
  source that accepts user identity from a client-supplied HTTP header without
  cryptographic validation
summary: >-
  The Okta Access Gateway includes an optional pass-through authentication
  source that accepts user identity from a client-supplied HTTP header without
  cryptographic validation. In architectures where this optional source is
  enabled withou…
severity: medium
cvss: 4.8
cvssVector: 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N'
cwe:
  - CWE-287
vendor: okta
product: access_gateway
affected:
  - access_gateway < 2026.9.1
patched:
  - access_gateway 2026.9.1
published: '2026-09-08'
updated: '2026-09-23'
sourceUpdated: '2026-09-23T18:00:37.843'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-78560'
references:
  - url: >-
      https://trust.okta.com/security-advisories/improper-authentication-validation-in-okta-access-gateway-pass-through-authentication-source-cve-2026-78560
    label: psirt@okta.com
tags:
  - nvd
  - cve.org
epss: 0.00202
epssPercentile: 0.08903
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-09-10T14:30:48.218255Z'
ingestedAt: '2026-09-08T21:11:12.319Z'
---

## Overview

The Okta Access Gateway includes an optional pass-through authentication source that accepts user identity from a client-supplied HTTP header without cryptographic validation. In architectures where this optional source is enabled without an upstream reverse proxy or firewall configured to sanitize and enforce client headers, an unauthenticated user can supply an arbitrary identity value to initiate a session.

## Affected

- `access_gateway < 2026.9.1`

## Remediation

Upgrade past the affected range:

- `access_gateway 2026.9.1`