CVE-2026-78560
Medium
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.
SeverityMedium
CVSS4.8
Exploit probability—
Product
Okta Access Gateway
PublishedSep 8, 2026
First seenSep 8, 2026
Weakness typeCWE-287Improper authentication
How to fix
Update
- okta access_gateway2026.9.1 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| okta access_gateway | v < 2026.9.1 | 2026.9.1 |
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