How severe is CVE-2026-78623?

CVE-2026-78623 has a CVSS 3.x base score of 7.7, rated high severity. It is exploitable over network with high attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity low, and availability low.

Is CVE-2026-78623 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (37th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-78623?

CVE-2026-78623 affects Okta Access Gateway. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-78623?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2026-78623 published?

CVE-2026-78623 was published on 2026-09-08 and last updated on 2026-09-22.

CVE-2026-78623

CVE-2026-78623 is a high-severity vulnerability in Okta Access Gateway with a CVSS 3.x base score of 7.7. 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-89.

Key facts

Severity: High (CVSS 3.x base score 7.7)
EPSS exploit prediction: 0% (37th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-89
Affected product: Okta Access Gateway
Published: 2026-09-08
Last modified: 2026-09-22

Description

The Okta Access Gateway does not sanitize SAML assertion values before interpolating them into database queries in the advanced mode datastore configuration. The unsanitized values are substituted directly into the query string prior to preparation, resulting in unintended SQL execution against the configured backend database.

Frequently asked questions

What is CVE-2026-78623?: The Okta Access Gateway does not sanitize SAML assertion values before interpolating them into database queries in the advanced mode datastore configuration. The unsanitized values are substituted directly into the query string prior to preparation, resulting in unintended SQL execution against the configured backend database.
How severe is CVE-2026-78623?: CVE-2026-78623 has a CVSS 3.x base score of 7.7, rated high severity. It is exploitable over network with high attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity low, and availability low.
Is CVE-2026-78623 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (37th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-78623?: CVE-2026-78623 affects Okta Access Gateway. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-78623?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2026-78623 published?: CVE-2026-78623 was published on 2026-09-08 and last updated on 2026-09-22.

References

https://trust.okta.com/security-advisories/improper-handling-of-saml-assertion-attributes-in-okta-access-gateway-advanced-mode-datastores-cve-2026-78623

Affected products (1)

cpe:2.3:a:okta:access_gateway:*:*:*:*:*:*:*:*

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