CVE-2026-78560

Improper Authentication Validation in Okta Access Gateway Pass-Through Authentication Source

Published Sep 8, 2026 CVSS 3.1 · 4.8 Medium EPSS < 1% KEV · Not listed
Description
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.

Remediation

Vendor Solution

Upgrade the Okta Access Gateway appliance to version 2026.9.1 or greater.

Tracking

Sign in to view the affected projects.

Advisories

No advisories available
History
Type Values Removed Values Added
CPEs cpe:2.3:a:okta:access_gateway:*:*:*:*:*:*:*:*
Type Values Removed Values Added
First Time appeared Okta
Okta access Gateway
Vendors & Products Okta
Okta access Gateway
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description 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.
Title Improper Authentication Validation in Okta Access Gateway Pass-Through Authentication Source
Weaknesses CWE-287
References
Metrics cvssV3_1

{'score': 4.8, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
Okta
Published
Updated
Sep 10, 2026, 2:30 PM
Reserved
Aug 24, 2026, 8:01 PM
Status
Analyzed
Published
Sep 8, 2026, 8:18 PM
Modified
Sep 23, 2026, 6:00 PM