EUVD-2026-74174
GHSA-4vpp-8gg6-2rvh
Severity by source
AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
Network-accessible gateway (AV:N/AC:L); PR:L reflects required Okta authentication; no scope change or availability impact from an authorization bypass.
Primary rating from Vendor (okta).
CVSS VectorVendor: okta
Lifecycle Timeline
5DescriptionCVE.org
The Okta Access Gateway improperly handles input sanitization and regular expression evaluation within its Protected Rule authorization check, resulting in an authorization bypass when an administrator has explicitly configured a Protected Rule policy on one or more application resources.
AnalysisAI
Authorization bypass in Okta Access Gateway (all versions before 2026.9.1) allows authenticated network users to circumvent Protected Rule access policies due to improper input sanitization and flawed regular expression evaluation in the authorization check component. When administrators have explicitly configured Protected Rule policies to restrict access to specific application resources, an attacker with low-privilege authentication can craft requests that defeat the policy evaluation, gaining unauthorized high-impact access to confidentiality and integrity of protected resources. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Two conditions must both be true: first, the target Okta Access Gateway deployment must have one or more Protected Rule policies explicitly configured by an administrator on application resources - the vulnerability exists specifically in the Protected Rule authorization check, so deployments with no Protected Rules configured are not affected by this bypass; second, the attacker must hold a valid low-privilege authenticated session (PR:L per CVSS vector), meaning any Okta-authenticated user who can reach the gateway is a potential attacker. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 3.1 vector (AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N, score 8.1) accurately characterizes this as a network-exploitable, low-complexity flaw requiring only a low-privilege authenticated session, with no user interaction and no scope change, yielding high confidentiality and integrity impact. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Upgrade Okta Access Gateway to version 2026.9.1 or later, which resolves the improper input sanitization and regex evaluation flaw in the Protected Rule authorization check, per the Okta PSIRT advisory at https://trust.okta.com/security-advisories/improper-input-sanitization-in-okta-access-gateway-protected-rules-cve-2026-78626. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, identify all Okta Access Gateway deployments and determine which versions are deployed; simultaneously inventory Protected Rule policies and the sensitive resources they are intended to protect. …
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Same weakness CWE-863 – Incorrect Authorization
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External POC / Exploit Code
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