CVE-2026-18963 (GCVE-0-2026-18963)

Vulnerability from cvelistv5 – Published: 2026-08-18 17:05 – Updated: 2026-08-19 01:55
VLAI
Title
Keycloak-services: keycloak-services: unauthenticated account takeover via reset-credentials flow bypass
Summary
A flaw was found in the reset-credentials flow of the keycloak-services component, which is the core engine for identity and access management in Red Hat Build of Keycloak. The issue allows an unauthenticated attacker to force the password reset process for any user without needing to click the required email verification link. This can result in the attacker gaining full control over target user accounts by directly setting new credentials.
Severity
9.1 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
CWE
  • CWE-640 - Weak Password Recovery Mechanism for Forgotten Password
Assigner
References
URL Tags
https://access.redhat.com/errata/RHSA-2026:56519 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:56520 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:56523 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:56524 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/security/cve/CVE-2026-18963 vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2511595 issue-trackingx_refsource_REDHAT
Impacted products
Vendor Product Version CPE status
Red Hat Red Hat build of Keycloak 26.4 Unaffected: 26.4.15-1 , < * (rpm)
    cpe:/a:redhat:build_keycloak:26.4::el9
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Red Hat Red Hat build of Keycloak 26.4 Unaffected: 26.4-23 , < * (rpm)
    cpe:/a:redhat:build_keycloak:26.4::el9
Create a notification for this product.
Red Hat Red Hat build of Keycloak 26.4.15     cpe:/a:redhat:build_keycloak:26.4
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Red Hat Red Hat build of Keycloak 26.6 Unaffected: 26.6.6-1 , < * (rpm)
    cpe:/a:redhat:build_keycloak:26.6::el9
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Red Hat Red Hat build of Keycloak 26.6 Unaffected: 26.6-12 , < * (rpm)
    cpe:/a:redhat:build_keycloak:26.6::el9
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Red Hat Red Hat build of Keycloak 26.6.6     cpe:/a:redhat:build_keycloak:26.6
Create a notification for this product.
Red Hat Red Hat JBoss Enterprise Application Platform Expansion Pack     cpe:/a:redhat:jbosseapxp
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Red Hat Red Hat Single Sign-On 7     cpe:/a:redhat:red_hat_single_sign_on:7
Create a notification for this product.
Date Public
2026-08-17 00:00
Credits
Red Hat would like to thank James Paremain for reporting this issue.
Show details on NVD website
To clipboard 

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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


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