Medium · CVSS 4.8CVE-2026-78560

Improper Authentication Validation in Okta Access Gateway Pass-Through Authentication SourceCVE-2026-78560

Answer in brief

CVE-2026-78560 records a Medium severity (CVSS 4.8) vulnerability in Improper Authentication Validation in Okta Access Gateway Pass-Through Authentication Source. The current sources do not mark it as known exploited. The current feed maps Okta/Okta Access Gateway (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Sep 8, 2026Updated Sep 23, 2026Source checked Oct 23, 2026First seen by HOL Sep 8, 2026Material review Sep 23, 2026

Upstream Advisory

Key facts

Risk: Medium · CVSS 4.8
Exploitation: Not marked as known exploited
Affected software: 2 mapped packages or products
Fix availability: Available

Why this deserves its current priority

CVSS is 4.8. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Okta/Okta Access Gateway (generic). Check affected ranges and fixed versions before updating.

Affected products and reported versions
Product	Affected versions	Fixed versions
cpe:2.3:a:okta:access_gateway::::::::	Not reported	Not reported

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
Okta/Okta Access Gatewaygeneric	>=0 <2026.9.1	2026.9.1

Recommended response

Check inventory. Check lockfiles and deployed manifests for Okta/Okta Access Gateway.
Review the reported fix. Source-reported solution: Upgrade the Okta Access Gateway appliance to version 2026.9.1 or greater.

Evidence timeline and material changes

Published upstream
Sep 8, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Sep 23, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Sep 8, 2026

Sources and claim methodology

Source referencetrust.okta.com

Upstream source 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.

Quoted source text, attributed separately from HOL analysis.