CVE-2026-78631
CVE-2026-78631 is a medium-severity vulnerability in Okta Hyperdrive with a CVSS 3.x base score of 5.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-532.
Key facts
- Severity: Medium (CVSS 3.x base score 5.3)
- EPSS exploit prediction: 0% (3rd percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-532
- Affected product: Okta Hyperdrive
- Published:
- Last modified:
Description
The Okta Hyperdrive Agent writes the decoded SAML bearer assertion to a local application log file at the default log level on every successful MFA completion. This insertion of sensitive information into the log file makes a live authentication credential readable by any local user with access to the log file.
Frequently asked questions
- What is CVE-2026-78631?
- The Okta Hyperdrive Agent writes the decoded SAML bearer assertion to a local application log file at the default log level on every successful MFA completion. This insertion of sensitive information into the log file makes a live authentication credential readable by any local user with access to the log file.
- How severe is CVE-2026-78631?
- CVE-2026-78631 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over local access with high attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity low, and availability none.
- Is CVE-2026-78631 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (3rd percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2026-78631?
- CVE-2026-78631 affects Okta Hyperdrive. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2026-78631?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- When was CVE-2026-78631 published?
- CVE-2026-78631 was published on 2026-09-08 and last updated on 2026-09-22.
References
Affected products (1)
- cpe:2.3:a:okta:hyperdrive:*:*:*:*:*:*:*:*
More vulnerabilities in Okta Hyperdrive
- CVE-2026-78574 — High (CVSS 7.5): The Okta Hyperdrive Integration plugin resolves a required assembly using a registry path within the current user's…
- CVE-2026-78627 — High (CVSS 7.3): The Okta Hyperdrive Integration installer does not mask the OAuth client secret when passed as an MSI property. The…
- CVE-2026-78629 — Medium (CVSS 5.6): The Okta Hyperdrive agent plugin returns a success response without a signed SAML assertion when the organization's…
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