What is CVE-2026-78629?

CVE-2026-78629 is a medium-severity vulnerability, classified under Incorrect Implementation of Authentication Algorithm. CVSS score: 5.6/10. Published 2026-09-08.

How severe is CVE-2026-78629?

Medium severity. CVSS v3 base score is 5.6 out of 10.

CVE-2026-78629

CVE-2026-78629

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.

CVSS v3 metric

CVSS v3 base score 5.6 (Medium). Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:N/I:H/A:N.

Weakness classification (CWE)

CWE-303 — Incorrect Implementation of Authentication Algorithm

References

psirt@okta.com

Frequently asked questions

What is CVE-2026-78629?: CVE-2026-78629 is a medium-severity vulnerability, classified under Incorrect Implementation of Authentication Algorithm. CVSS score: 5.6/10. Published 2026-09-08.
How severe is CVE-2026-78629?: Medium severity. CVSS v3 base score is 5.6 out of 10.