Agents and Access Gateway

CVE-2026-78629: Improper Authentication Verification in the Okta Hyperdrive Agent MFA Response Handling

The Okta Hyperdrive agent plugin returns a success response without a signed SAML assertion when the organization's policy requires no MFA for a given user.

Published

ExploitedNot in CISA KEV
Ransomware useNot reportedPer CISA
SeverityMEDIUMCVSS 3.1 5.6
EPSS0.14%Chance of exploitation in 30 days
Public exploitNot tracked
FixAvailable

Automatic summary from the vendor's CVE record. We haven't written a full analysis of this vulnerability yet.

Affected and fixed versions

Product / branchFixed in
Okta Hyperdrive Agent 1.21.5.2 or later

Always confirm against the vendor advisory, which lists every fixed hotfix.

What it is

The Okta Hyperdrive agent plugin returns a success response without a signed SAML assertion when the organization's policy requires no MFA for a given user. The response contains only a bare boolean validation indicator with no cryptographic artifact, resulting in an unverifiable authentication verdict being delivered to the relying application.

Sources

KEV status, EPSS score and vendor data refreshed automatically, last on 12 Oct 2026.

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