---
id: CVE-2026-78631
title: >-
  The Okta Hyperdrive Agent writes the decoded SAML bearer assertion to a local
  application log file at the default log level on every successful MFA
  completion
summary: >-
  The Okta Hyperdrive Agent writes the decoded SAML bearer assertion to a local
  application log file at the default log level on every successful MFA
  completion. This insertion of sensitive information into the log file makes a
  live authen…
severity: medium
cvss: 5.3
cvssVector: 'CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:L/A:N'
cwe:
  - CWE-532
vendor: okta
product: hyperdrive
affected:
  - 'hyperdrive >= 1.4.0, < 1.5.2'
patched:
  - hyperdrive 1.5.2
published: '2026-09-08'
updated: '2026-09-22'
sourceUpdated: '2026-09-22T20:02:04.043'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-78631'
references:
  - url: >-
      https://trust.okta.com/security-advisories/improper-restriction-of-sensitive-information-in-okta-hyperdrive-agent-logging-cve-2026-78631
    label: psirt@okta.com
tags:
  - nvd
  - cve.org
epss: 0.00137
epssPercentile: 0.02512
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-09-10T14:41:08.955407Z'
ingestedAt: '2026-09-08T21:11:12.374Z'
---

## Overview

The Okta Hyperdrive Agent writes the decoded SAML bearer assertion to a local application log file at the default log level on every successful MFA completion. This insertion of sensitive information into the log file makes a live authentication credential readable by any local user with access to the log file.

## Affected

- `hyperdrive >= 1.4.0, < 1.5.2`

## Remediation

Upgrade past the affected range:

- `hyperdrive 1.5.2`