TI-2026-67731 Aliases CVE-2026-105302 GHSA-3xph-hcf4-hx94

Keycloak session note mapper leaks upstream identity provider tokens

LOW 25CWE-200Published 2026-10-05 · Updated 2026-10-05

Key facts

Attack vector: Network
Privileges required: Low
User interaction: Required
Attack complexity: Low
Impact type: Information disclosure
Confidentiality · integrity · availability: High · None · None
Fix status: No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and Red Hat. Impact type from CWE-200.

Summary

Red Hat Build of Keycloak is affected by a flaw in the User Session Note mapper. The mapper does not check whether a session note holds federated access tokens from external identity providers (CWE-200). A delegated client administrator can copy a user's upstream bearer tokens into tokens issued to their managed application, which can lead to unauthorized access to the user's data on external platforms.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

Description from the CNA

A flaw was found in the User Session Note mapper of the Keycloak identity and access management solution. The issue occurs because the mapper does not validate whether a requested session note contains sensitive internal credentials, such as federated access tokens from external identity providers. This allows a delegated client administrator to leak a user's upstream bearer tokens into the tokens issued to their managed application, potentially leading to unauthorized access to the user's data on external platforms.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00201 10th percentileScored 2026-11-07

Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Partial

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
Red Hat	Red Hat Build of Keycloak	—	—	No fix listed	CNA
Red Hat	Red Hat Build of Keycloak	—	—	No fix listed	CNA
Red Hat	Red Hat Single Sign-On 7	—	—	Not affected	CNA

Red Hat Build of Keycloak VendorRed Hat Affected — Fixed in — No fix listed CNA
Red Hat Build of Keycloak VendorRed Hat Affected — Fixed in — No fix listed CNA
Red Hat Single Sign-On 7 VendorRed Hat Affected — Fixed in — Not affected CNA

CPE names CNA · 2

CPE	Versions	Role	Vendor
cpe:/a:redhat:build_keycloak:	—	—	Red Hat
cpe:/a:redhat:red_hat_single_sign_on:7	7	—	Red Hat

cpe:/a:redhat:build_keycloak: Versions — — ·Red Hat
cpe:/a:redhat:red_hat_single_sign_on:7 Versions 7 — ·Red Hat

Remediation

The sources list no fixed version for Red Hat Build of Keycloak, and no plan is available. Red Hat Single Sign-On 7 is not affected.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

Product	Status	Plan or fix
Red Hat Build of Keycloak	Affected	No fix yet

Not affected: 1 product

Red Hat Single Sign-On 7

Timeline

2026-10-05 Threatist record created from CVE-2026-105302
2026-10-05 Alias added: GHSA-3xph-hcf4-hx94
2026-10-05 Affected versions changed · Red Hat
2026-10-05 CVSS score added · Red Hat

References

Other 2

TI-2019-15875 Protection mechanism failure in Jenkins Pipeline: Groovy Plugin KEVCVSS 3.1CRITICAL 9.9
TI-2019-15874 Protection mechanism failure in Jenkins Script Security Plugin KEVCVSS 3.1CRITICAL 9.9
TI-2019-08259 Underflow in PHP-FPM can lead to RCE KEVCVSS 3.1CRITICAL 9.8
TI-2019-05363 Code injection in Elastic Kibana KEVCVSS 3.1CRITICAL 10.0
TI-2019-03949 Out-of-bounds write in ESXi and Horizon DaaS KEVCVSS 3.1CRITICAL 9.8
TI-2018-16080 A code execution vulnerability exists in the Stapler web framework used by Jenkins 2.153… KEVCVSS 3.1CRITICAL 9.8

See all 7413 →

Sources

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