CVE-2026-78629

Authentication bypass via unsigned MFA success response

Published Sep 8, 2026 · Updated Sep 10, 2026

Authentication bypass in Okta Hyperdrive Agent 1.2.0 through 1.5.1 allows local users to supply an unverifiable MFA success verdict. When organization policy requires no MFA for a user, the agent plugin emits a bare Boolean success response instead of a signed SAML assertion. Low-privileged local access and high attack complexity are required; a relying application can accept a result that lacks cryptographic proof.

CVSS severity5.6
Medium
EPSS probability0.10%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authentication bypass in Okta Hyperdrive Agent 1.2.0 through 1.5.1 allows local users to supply an unverifiable MFA success verdict. When organization policy requires no MFA for a user, the agent plugin emits a bare Boolean success response instead of a signed SAML assertion. Low-privileged local access and high attack complexity are required; a relying application can accept a result that lacks cryptographic proof.

The record

CVE
CVE-2026-78629
Published
Sep 8, 2026
Updated
Sep 10, 2026
Vendor
Okta
Product
Okta Hyperdrive Agent
Classifications
CWE-303
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

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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 Agentversion=1.2.0 <1.5.2

Published CVSS scores

5.6OktaCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:N/I:H/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-303Incorrect Implementation of Authentication Algorithm

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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