# CVE-2026-78560: Improper Authentication Validation in Okta Access Gateway Pass-Through Authentication Source

> CVE-2026-78560: Improper Authentication Validation in Okta Access Gateway Pass-Through Authentication Source. CVSS 4.8 (CVSS 3.1).

Canonical: https://rewindex.com/cve/CVE-2026-78560
Last updated: 2026-09-23T18:00:37Z

- Published: 2026-09-08 20:09 UTC · Updated: 2026-09-23 18:00 UTC · Assigner: Okta
- CVSS: 4.8 (CVSS 3.1) · Severity: Medium · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
- EPSS: 0.29%, 21th percentile (scored 2026-10-25)
- CISA KEV: no
- CWE: CWE-287

## 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.

## Affected vendors and products

- Okta: Okta Access Gateway

## Tracked companies

- [Okta](https://rewindex.com/company/okta.md)

## References

- [CVE record on cve.org](https://www.cve.org/CVERecord?id=CVE-2026-78560)
- [NVD entry](https://nvd.nist.gov/vuln/detail/CVE-2026-78560)
- [https://trust.okta.com/security-advisories/improper-authentication-validation-in-okta-access-gateway-pass-through-authentication-source-cve-2026-78560](https://trust.okta.com/security-advisories/improper-authentication-validation-in-okta-access-gateway-pass-through-authentication-source-cve-2026-78560)

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_Sources: CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (https://www.cve.org/) This product uses data from the NVD API but is not endorsed or certified by the NVD. (https://nvd.nist.gov/) Known Exploited Vulnerabilities catalog from CISA. (https://www.cisa.gov/known-exploited-vulnerabilities-catalog) EPSS scores from FIRST (Exploit Prediction Scoring System). (https://www.first.org/epss/)_


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Canonical: https://rewindex.com/cve/CVE-2026-78560 · Markdown: https://rewindex.com/cve/CVE-2026-78560.md · JSON: https://rewindex.com/api/v1/cves/CVE-2026-78560 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-10-26T03:11:46.298Z