Cyber Resilience

CVE-2026-9705

Redhat Build Of Keycloak 26.4 – 26.4.13

Published
25 June 2026
Modified
01 July 2026
Patch / advisory
View advisory
CVSS Score v3.1 6.5
Click a component to see what it means
Raw vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
EPSS Score 0.0027 19th percentile
Risk Priority 35 floored blend · peak EPSS

Summary

CVE-2026-9705 is a medium-severity Insufficient Session Expiration (CWE-613) vulnerability in Redhat Build Of Keycloak. Its CVSS base score is 6.5 (Medium).

Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked at the 19th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

The strongest mitigations our analysis identified map to AC-12 (Session Termination) and AC-3 (Access Enforcement) — see the control section below for these in your framework.

OWASP Top 10 for Web (2025)

A07:2025 Authentication Failures

EU & UK References

Vulnerability Data

A flaw was found in Keycloak's client registration service. A remote attacker, possessing a previously issued Registration Access Token (RAT), could exploit this vulnerability to re-enable a client that an administrator had explicitly disabled. This bypasses security controls, allowing the…

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attacker to reset the client's secret and potentially regain privileged API access. The primary impact includes unauthorized information disclosure and potential integrity compromise.

CWE(s)
CWE-613

Related Threats

MITRE ATT&CK Enterprise TechniquesAI

T1190 Exploit Public-Facing Application Initial Access
Adversaries may attempt to exploit a weakness in an Internet-facing host or system to initially access a network.
attack.mitre.org →
T1078.004 Cloud Accounts Stealth
Valid accounts in cloud environments may allow adversaries to perform actions to achieve Initial Access, Persistence, Privilege Escalation, or Defense Evasion.
attack.mitre.org →
Why these techniques?

Remote exploitation of Keycloak registration service flaw (T1190) using valid RAT to re-enable disabled client and regain access (T1078.004).

Confidence: MEDIUM · MITRE ATT&CK Enterprise v19.0

Likely ATT&CK TechniquesAI

Techniques this vulnerability likely enables, inferred from its description, weakness type, and attributed-actor tradecraft. Confidence is per-technique.

T1078 Valid Accounts Stealthconfidence: HIGH
Re-enabling a disabled client and resetting its secret allows an attacker to regain valid account credentials for API access.
attack.mitre.org →
T1550.001 Application Access Token Lateral Movementconfidence: HIGH
The attacker re-activates and re-uses an existing application access token (RAT) to restore client functionality.
attack.mitre.org →
T1098 Account Manipulation Persistenceconfidence: MEDIUM
Resetting the client secret constitutes manipulation of an existing account's authentication material.
attack.mitre.org →
inferred from description + CWE · MITRE ATT&CK Enterprise v19.0

CVEs Like This One

CVE-2026-9802Same product: Redhat Build Of Keycloak
CVE-2026-4628Same product: Redhat Build Of Keycloak
CVE-2026-9792Same product: Redhat Build Of Keycloak
CVE-2026-4630Same product: Redhat Build Of Keycloak
CVE-2026-37977Same product: Redhat Build Of Keycloak
CVE-2026-7500Same product: Redhat Build Of Keycloak
CVE-2026-9689Same product: Redhat Build Of Keycloak
CVE-2026-37979Same product: Redhat Build Of Keycloak
CVE-2026-9803Same product: Redhat Build Of Keycloak
CVE-2026-9793Same product: Redhat Build Of Keycloak

Affected Assets

redhat
build of keycloak
26.4 — 26.4.13 · 26.6 — 26.6.4

Mitigating Controls

Control response

Prevent
Stop it (NIST 800-53)
  • AC-12 Session Termination
  • AC-3 Access Enforcement
  • IA-5 Authenticator Management
Detect
Catch it (NIST detect / respond)

—

Harden
Shrink the surface (DISA STIG)

—

Validate
Prove the fix (OWASP ASVS)

—

Mitigating Controls (NIST 800-53 r5) AI

AC-12 Session Termination good match
prevent

Directly requires invalidation of active tokens (RAT) upon administrative disablement of the client, preventing reuse to re-enable or reset secrets.

AC-3 Access Enforcement good match
prevent

Enforces access decisions that must reflect the current client state (disabled), blocking any RAT-based re-activation or secret reset.

IA-5 Authenticator Management partial match
prevent

Requires proper management and revocation of authenticators (RATs) when the associated client is disabled, stopping stale-token abuse.

Mitigating Controls (NIST CSF 2.0) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.

PR.AA-01 mostly match
prevents

Credential lifecycle management directly includes enforcing session expiration to prevent reuse.

PR.AA-05 mostly match
prevents

Authorization policy enforcement and review covers terminating stale sessions to limit access scope.

PR.AA-03 partial match
prevents

Authentication mechanisms can incorporate session timeout checks but do not inherently address expiration policy.

Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.

A.8.5 Secure authentication none match
none

Automatic termination of inactive sessions and limits on connection duration shrink the window during which a hijacked or unattended authenticated session can be exploited.

References