CVE-2026-115546

Okta Access Gateway (OAG) does not validate the selected authentication source during sign-on

Risk score: 61/100
CVSS: 8.1 v3.1
Exploit chance (30 days): 0.4%
Published: 23 Oct 2026

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What to know

What it is: Okta Access Gateway (OAG) does not validate the selected authentication source during sign-on. An authenticated user with an active session can modify the authentication source parameter, which may generate a SAML assertion granting access to the Admin Console.
Affected: See advisory
Fix: Apply the vendor's security update; see the linked advisory.
Exploitation: No known exploitation

Why it is Amber

CVSS 8.1 high
Remotely exploitable without logging in

References

http://trust.okta.com/security-advisories/authentication-source-verification-issue-in-okta-access-gateway-cve-2026-115546

Original description

Okta Access Gateway (OAG) does not validate the selected authentication source during sign-on. An authenticated user with an active session can modify the authentication source parameter, which may generate a SAML assertion granting access to the Admin Console.

Last activity 23 Oct 2026. Patch Forecast updates every hour.