CVE-2026-78627

OAuth client secret disclosure via plaintext installer artifacts

Published Sep 8, 2026 · Updated Sep 10, 2026

Credential exposure in Okta Hyperdrive Integration Plugin before 1.5.2 allows local users to read an OAuth client secret from Windows artifacts. The MSI package passes the client-secret property without masking it, so installer logs, Application Event Log entries, and the installer process command line retain it in plaintext. Exposure requires an installation that supplies the secret as an MSI property; local users can recover the credential, but no service interruption is reported.

CVSS severity7.3
High
EPSS probability0.10%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Credential exposure in Okta Hyperdrive Integration Plugin before 1.5.2 allows local users to read an OAuth client secret from Windows artifacts. The MSI package passes the client-secret property without masking it, so installer logs, Application Event Log entries, and the installer process command line retain it in plaintext. Exposure requires an installation that supplies the secret as an MSI property; local users can recover the credential, but no service interruption is reported.

The record

CVE
CVE-2026-78627
Published
Sep 8, 2026
Updated
Sep 10, 2026
Vendor
Okta
Product
Okta Hyperdrive Integration Plugin
Classifications
CWE-532, T1552
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 8, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 10, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=1.2.0 <1.5.2

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Okta · Okta Hyperdrive Integration Pluginversion=1.2.0 <1.5.2

Published CVSS scores

7.3OktaCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-532Insertion of Sensitive Information into Log File
T1552Unsecured Credentials

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo