TI-2026-79551 Aliases CVE-2026-115546 GHSA-pqrr-j665-pf8m

Authentication source not validated in Okta Access Gateway sign-on

LOW 38CWE-287Published 2026-10-23 · Updated 2026-10-23

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: High
Impact type: Security bypass
Confidentiality · integrity · availability: High · High · High
Fix status: Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-287.

Summary

Okta Access Gateway (OAG) before 2026.10.2 does not validate the selected authentication source during sign-on. An authenticated user with an active session can change the authentication source parameter, which may generate a SAML assertion that grants access to the Admin Console. The flaw is classified as Improper Authentication (CWE-287) and Authorization Bypass Through User-Controlled Key (CWE-639). The attack is remote, needs high-complexity conditions and requires no user interaction.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

Description from the CNA

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.0042 36th percentileScored 2026-11-07

Fix Fixed Okta Access Gateway (Okta): 2026.10.2

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
Okta	Okta Access Gateway	before 2026.10.2	2026.10.2	Patch available	CNA

Okta Access Gateway VendorOkta Affected before 2026.10.2 Fixed in 2026.10.2 Patch available CNA

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPE	Versions	Role	Vendor
cpe:2.3:a:okta:access_gateway::::::::	—	—	Okta

cpe:2.3:a:okta:access_gateway:*:*:*:*:*:*:*:* Versions — — ·Okta

Remediation

Okta Access Gateway users should upgrade to version 2026.10.2 or later, which fixes the flaw. The sources list no vendor advisory identifier for this fix.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

Fix · CNA Okta Access Gateway (Okta) Fixed in 2026.10.2

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

Release · 2026-10-23
Okta Access Gateway 2026.10.2
2 records Highest priority Priority MEDIUM 1 MEDIUM, 1 LOW
Other records, highest priority first
- TI-2026-79552 Command execution via Admin Console input in Okta Access GatewayPriority MEDIUM 42
Show all 2 records →

Timeline

2026-10-23 Threatist record created from CVE-2026-115546
2026-10-23 Alias added: GHSA-pqrr-j665-pf8m
2026-10-23 CISA SSVC decision points changed
2026-10-23 Priority changed: MEDIUM → LOW

References

Other 1

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

TI-2021-20426 Imprivata Privileged Access Management (formally Xton Privileged Access Management) 2.3.202112051108 allows XSS. CVSS 3.1MEDIUM 5.4
TI-2022-08176 Code injection in Okta Advanced Server Access Client CVSS 3.1HIGH 8.8
TI-2021-09349 A command injection vulnerability in the cookieDomain and relayDomain parameters of Okta… CVSS 3.1MEDIUM 6.7
TI-2026-54670 Improper Handling of SAML Assertion Attributes in Okta Access Gateway Advanced Mode Datastores CVSS 3.1CRITICAL 9.9
TI-2026-79552 Command execution via Admin Console input in Okta Access Gateway CVSS 3.1CRITICAL 9.1
TI-2023-00089 Command injection in Okta Advanced Server Access CVSS 3.1HIGH 8.8

See all 39 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences