CVSS 3.1
6.8 mediumCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:NCVE-2026-125652 red hat: Missing Authorization
Medium (6.8) in red hat. EPSS 0.2% estimated probability of exploitation activity in the next 30 days.
On this page
A flaw was found in the keycloak-services component of Keycloak, which provides the core authentication and authorization logic for the identity provider. The issue occurs when a user initiates a login after visiting the password reset page, causing the system to skip mandatory security checks for Proof Key for Code Exchange (PKCE). This could allow an attacker who intercepts a login code to gain unauthorized access to the user's account without needing the required security verifier.
Severity
- EPSS
- 0.2% estimated probability of exploitation activity in the next 30 days; 16th percentile. Scored 2026-11-13. A forecast for this CVE across the internet, not for your own systems.
- CISA's assessment (SSVC)
- Exploitation: none · Automatable: no · Technical impact: total, assessed 2026-11-10. From CISA's Vulnrichment in the CVE List: whether it is exploited, whether exploiting it can be automated, and how much control it gives.
- CWE
- CWE-862 Missing Authorization
- OWASP Top 10
- A01:2025 Broken Access Control
- Published
- Modified
- Assigned by
- redhat (CNA)
- NVD analysis
- Awaiting analysis
- Record from
- the NVD, synced
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Affected
- red hat:red hat build of keycloak
- red hat:red hat single sign-on 7
Red Hat
Red Hat rates this Moderate.
The Red Hat Product Security team has assessed the severity of this vulnerability as Moderate, given that exploitation requires a victim to navigate through a specific sequence of pages (reset credentials) before authenticating and requires the attacker to intercept the resulting authorization code. Successful exploitation allows an attacker to exchange an intercepted code for tokens and impersonate the user. The vulnerability's root cause is the failure to evaluate client-level PKCE requirements when creating authorization sessions via the login-actions entry point.
Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Build of Keycloak | keycloak-services | Affected | |
| Red Hat Build of Keycloak | rhbk/keycloak-rhel9 | Affected | |
| Red Hat Single Sign-On 7 | keycloak-services | Not affected | |
| Red Hat Single Sign-On 7 | rh-sso7-keycloak | Not affected |
Contains Red Hat Security Data © Red Hat, Inc., licensed under CC BY 4.0. Source: https://access.redhat.com/security/data. Modified: reformatted. Red Hat's page for CVE-2026-125652.
Attack patterns (CAPEC)
- CAPEC-665 Exploitation of Thunderbolt Protection Flaws Likelihood: Low · Severity: Very High
The attack patterns MITRE's CAPEC relates to this record's weaknesses, as MITRE names them. Credits.