Vulnerability · Published Sep 8, 2026 · Assigned by Okta
CVE-2026-78552Validation Bypass in Okta Access Gateway Custom Directives
Medium 6.0
In plain English
A medium-severity security flaw in Okta Access Gateway from Okta. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 33% of all known vulnerabilities).
Severity (CVSS 3.1)6.0Medium
Exploit odds (30 days)0.4%top 67.1% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
The Okta Access Gateway does not apply its Lua directive restriction to the application-level custom configuration field. The field is interpolated directly into the nginx server block without inspection, resulting in execution of injected directives.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Okta | Okta Access Gateway | 0 – before 2026.9.1 |
Weakness: CWE-693 · Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:H/A:L