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CVE Record

CVE-2026-9792: Keycloak: keycloak: security restriction bypass allows unauthorized ropc token acquisition

A flaw was found in Keycloak's Client Policies, specifically within the `org.keycloak.protocol.oidc` component. When certain condition providers (client-type, client-roles, client-attributes, client-scopes) are used to enforce security restrictions, the `reject-ropc-grant` executor is silently bypassed. This allows an unauthenticated remote attacker to obtain tokens via a Resource Owner Password Credentials (ROPC) grant, even when a policy is explicitly configured to block it. This bypass can lead to unauthorized access and information disclosure.

MediumCVSS 6.5Not KEV-listedUpdated
Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

Keycloak policies meant to block password-based token grants can be bypassed in specific configurations. If exposed, an attacker may obtain tokens despite an explicit block, creating unauthorized access and information disclosure risk.

Executive priority

Treat as a near-term identity control fix, especially where Keycloak protects sensitive internal or customer applications. It is not marked actively exploited, but token issuance bypasses can undermine access controls.

Technical view

The flaw affects Keycloak Client Policies in org.keycloak.protocol.oidc. When client-type, client-roles, client-attributes, or client-scopes condition providers are used, the reject-ropc-grant executor is silently bypassed, allowing ROPC token acquisition contrary to policy.

Likely exposure

Highest concern is Red Hat build of Keycloak 26.4 or 26.6 using the named Client Policy condition providers to enforce reject-ropc-grant. The bundle names rhbk/keycloak-rhel9, rhbk/keycloak-rhel9-operator, and rhbk/keycloak-operator-bundle packages. Exposure is configuration-dependent.

Exploitation context

The source bundle does not report KEV listing or active exploitation. The CVSS vector indicates remote, unauthenticated, low-complexity exploitation with no user interaction, but only low confidentiality and integrity impact are scored.

Researcher notes

Evidence supports a policy bypass in specific Client Policy configurations. The affected-version data distinguishes package streams and includes unaffected product entries, so validate against Red Hat advisories before broad conclusions.

Mitigation direction

  • Review Red Hat RHSA advisories for the applicable Keycloak package stream.
  • Update affected Red Hat build of Keycloak packages per vendor guidance.
  • Audit Client Policies using the named condition providers and reject-ropc-grant.
  • Consider disabling ROPC grant where business workflows do not require it.
  • Monitor identity logs for unexpected ROPC token issuance.

Validation and detection

  • Inventory Red Hat build of Keycloak versions and package names.
  • Identify clients and realms using reject-ropc-grant policies.
  • Check whether policies depend on client-type, roles, attributes, or scopes conditions.
  • Confirm updated packages match Red Hat unaffected guidance.
  • Review token issuance logs for ROPC activity inconsistent with policy.
Prepared
Confidence
high
Sources
8

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.

ATT&CK lookup starting points

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cwe · low confidence lookup

CWE-280: Exact CWE lookup

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description · low confidence lookup

Credential and access behavior lookup

The CVE wording references authentication or credential exposure, so valid-account and credential-access review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.

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cve · low confidence lookup

CVE-2026-9792 mapping review

Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.

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Vulnerability profileCVE Program record
Severity
Medium
CVSS
6.5 (3.1)
Known Exploited
No
Published

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

1CVSS vectors
5Timeline events
1ADP providers
7Source links

SSVC decision data

CISA-ADPCISA Coordinator
Timestamp
Version
2.0.3
Exploitation: noneAutomatable: yesTechnical Impact: partial

CVSS vector scores

1 official score

We collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.

ScoreVersionSeverityVectorExploitImpactSource
6.5CVSS 3.1MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N3.92.5redhat

Vulnerability scoring details

Base CVSS 3.1 score

6.5Medium
CVSS 3.1 vector shape for CVE-2026-9792Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

Attack Vector
NetworkAdjacentLocalPhysical
Attack Complexity
LowHigh
Privileges Required
NoneLowHigh
User Interaction
NoneRequired
Scope
ChangedUnchanged
Confidentiality Impact
HighLowNone
Integrity Impact
HighLowNone
Availability Impact
HighLowNone

Vulnerability timeline

Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.

  1. Source timelineredhat

    Reported to Red Hat.

  2. CVE reservedCVE Program

    The CVE ID was reserved by the assigning CNA.

  3. Source timelineredhat

    Made public.

  4. CVE publishedCVE Program

    The CVE record was published.

  5. CVE updatedCVE Program

    The CVE record metadata indicates this as the latest update time.

ADP provider summaries

CISA-ADPCISA ADP Vulnrichment
other:ssvc

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
Red HatRed Hat build of Keycloak 26.4rhbk/keycloak-operator-bundle, 26.4.13-1affected
Red HatRed Hat build of Keycloak 26.4rhbk/keycloak-rhel9, 26.4-19affected
Red HatRed Hat build of Keycloak 26.4rhbk/keycloak-rhel9-operator, 26.4-19affected
Red HatRed Hat build of Keycloak 26.4.13rhbk/keycloak-rhel9unaffected
Red HatRed Hat build of Keycloak 26.6rhbk/keycloak-operator-bundle, 26.6.3-3affected
Red HatRed Hat build of Keycloak 26.6rhbk/keycloak-rhel9, 26.6-6affected
Red HatRed Hat build of Keycloak 26.6rhbk/keycloak-rhel9-operator, 26.6-6affected
Red HatRed Hat build of Keycloak 26.6.3rhbk/keycloak-rhel9unaffected
Weakness

CWE details

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.

CWE-280 · source CWE mapping

Improper Handling of Insufficient Permissions or Privileges

Improper Handling of Insufficient Permissions or Privileges represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.