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

> Attackers can bypass MFA verification when policies allow it, receiving unverifiable authentication success responses from the Okta Hyperdrive Agent.

- **Severity:** Medium 5.6 (`CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:N/I:H/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 8 Sep 2026
- **Updated:** 10 Sep 2026
- **Also known as:** GHSA-p4wq-g97j-pcf5

## What is CVE-2026-78629?

CVE-2026-78629 is a medium-severity authentication bypass vulnerability in Okta Hyperdrive Agent, published on 8 Sep 2026. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

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.

Weakness: CWE-303 (Incorrect Implementation of Authentication Algorithm)

## Which versions are affected by CVE-2026-78629?

It affects 1 product.


Products: Okta Hyperdrive.

## How do I fix CVE-2026-78629?

No fix has been published for CVE-2026-78629 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-78629 being exploited?

There is no known exploitation of CVE-2026-78629 in the wild and no public exploit code.

## Other vulnerabilities in Okta Hyperdrive Agent

- [CVE-2026-78574](https://insights.sbomify.com/CVE-2026-78574/): Improper Assembly Resolution in Okta Hyperdrive Integration Plugin Registry Handling (high 7.5)
- [CVE-2026-78627](https://insights.sbomify.com/CVE-2026-78627/): Improper Credential Protection in Okta Hyperdrive Integration Installer Logging (high 7.3)
- [CVE-2026-78631](https://insights.sbomify.com/CVE-2026-78631/): Improper Restriction of Sensitive Information in Okta Hyperdrive Agent Logging (medium 5.3)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-78629 and fix it if it is affected.

What it is: CVE-2026-78629 is a medium-severity authentication bypass vulnerability in Okta Hyperdrive Agent, published on 8 Sep 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-78629 in the wild and no public exploit code.

Affected product: Okta Hyperdrive Agent. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-78629/ (Markdown: https://insights.sbomify.com/CVE-2026-78629/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-78629
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-78629
- OSV: https://osv.dev/vulnerability/CVE-2026-78629

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-78629/
Summaries are generated and may contain mistakes; the official description above is the record.