Critical severity · published Aug 18, 2026
CVE-2026-18963
Keycloak-services: keycloak-services: unauthenticated account takeover via reset-credentials flow bypass
9.1
CVSS
4.7%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)4.7% · higher than 92% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
RH
Red Hat Single Sign-On 7 · Red Hat
All versions, or not specified · source: vendor
RH
Red Hat build of Keycloak 26.4 · Red Hat
All versions, or not specified · source: vendor
RH
Red Hat build of Keycloak 26.6 · Red Hat
All versions, or not specified · source: vendor
IE
Industrial Edge Management Cloud · Siemens
0 · source: CISA
IE
Industrial Edge Management Pro V1 · Siemens
V1.14.9 before V1.15.20 · source: CISA
IE
Industrial Edge Management Pro V2 · Siemens
V2.2.0 before V2.2.2 · source: CISA
IE
Industrial Edge Management Virtual · Siemens
V2.6.0 before V2.9.1 · source: CISA
In the news
VulnerabilityCritical
Critical Keycloak Password Reset Flaw Could Let Unauthenticated Attackers Take Over Any Account
Red Hat and the Keycloak project have released patches to address a critical security flaw in the open-source identity and access management server that could allow an unauthenticated remote attacker to take over any user account by forcing a password reset.
The vulnerability, assigned the CVE identifier CVE-2026-18963, is rated 9.1 on the CVSS scoring system by Red Hat, which acts as
Aug 24, 2026·The Hacker News
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-18963
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-18963
access.redhat.com
https://access.redhat.com/errata/RHSA-2026:56519
access.redhat.com
https://access.redhat.com/errata/RHSA-2026:56520
access.redhat.com
https://access.redhat.com/errata/RHSA-2026:56523
access.redhat.com
https://access.redhat.com/errata/RHSA-2026:56524
access.redhat.com
https://access.redhat.com/security/cve/CVE-2026-18963
bugzilla.redhat.com
https://bugzilla.redhat.com/show_bug.cgi?id=2511595
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