Validation Bypass in Okta Access Gateway Custom Directives

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-78552
StatePUBLISHED
AssignerOkta
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-09-08 20:18:36 UTC
Updated2026-09-23 17:51:07 UTC
DescriptionThe 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.

Risk And Classification

Primary CVSS: v3.1 4.9 MEDIUM from [email protected]

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N

EPSS: 0.003290000 probability, percentile 0.262960000 (date 2026-09-23)

Problem Types: CWE-693 | CWE-693 Protection Mechanism Failure

VersionSourceTypeScoreSeverityVector
3.1[email protected]Primary4.9MEDIUMCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N
3.1[email protected]Secondary6MEDIUMCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:H/A:L
3.1CNADECLARED6MEDIUMCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:H/A:L

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
High
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
High
Availability
None

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Okta Access Gateway All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Okta Okta Access Gateway affected 2026.9.1 semver Not specified

References

ReferenceSourceLinkTags
trust.okta.com/security-advisories/validation-bypass-in-okta-access-gateway-... [email protected] trust.okta.com Vendor Advisory
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Additional Advisory Data

Solutions

CNA: Upgrade the Okta Access Gateway appliance to version 2026.9.1 or greater.

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