Staging Environment: Content and features may be unstable or change without notice.
Advisory details: vulnrichment / CVE-2026-18963
Advisory ID vulnrichment/CVE-2026-18963
Aliases
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.
Status Published
Exploitability 0.5
Weighted Severity 0.0
Risk
Affected and Fixed Packages Package Details
Introduced and Fixed Package Commit Patches Package Commit Patches Details
Weaknesses (1)
CWE-640 Weak Password Recovery Mechanism for Forgotten Password
System Score Found at
cvssv3.1 9.1
ssvc Track
Reference id Reference type URL
https://access.redhat.com/errata/RHSA-2026:56519
https://access.redhat.com/errata/RHSA-2026:56520
https://access.redhat.com/security/cve/CVE-2026-18963
https://bugzilla.redhat.com/show_bug.cgi?id=2511595
cpe:/a:redhat:build_keycloak:26.4 Other https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:/a:redhat:build_keycloak:26.4
cpe:/a:redhat:build_keycloak:26.4::el9 Other https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:/a:redhat:build_keycloak:26.4::el9
cpe:/a:redhat:build_keycloak:26.6 Other https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:/a:redhat:build_keycloak:26.6
cpe:/a:redhat:build_keycloak:26.6::el9 Other https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:/a:redhat:build_keycloak:26.6::el9
cpe:/a:redhat:jbosseapxp Other https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:/a:redhat:jbosseapxp
cpe:/a:redhat:red_hat_single_sign_on:7 Other https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:/a:redhat:red_hat_single_sign_on:7
RHSA-2026:56523 Advisory https://access.redhat.com/errata/RHSA-2026:56523
RHSA-2026:56524 Advisory https://access.redhat.com/errata/RHSA-2026:56524
Data source Exploit-DB
Date added Oct. 21, 2026
Description Keycloak 26.7.2 - Unauthenticated Account Takeover
Ransomware campaign use Unknown
Source publication date Oct. 21, 2026
Exploit type webapps
Platform multiple
Source update date Oct. 21, 2026

No EPSS data available for this advisory.

Patch URL
There are no known patches.
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N Found at None
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: SSVCv2/E:N/A:Y/T:T/P:M/B:A/M:M/D:T/2026-08-20T13:53:38Z/ Found at None

Vector: SSVCv2/E:N/A:Y/T:T/P:M/B:A/M:M/D:T/2026-08-20T13:53:38Z/

Decision: Track

Source URL: https://github.com/cisagov/vulnrichment/blob/develop/2026/18xxx/CVE-2026-18963.json

Source Advisory: vulnrichment/CVE-2026-18963

View SSVC decision tree 
[{'Exploitation': 'none'},
 {'Automatable': 'yes'},
 {'Technical Impact': 'total'},
 {'Mission Prevalence': 'minimal'},
 {'Public Well-being Impact': 'material'},
 {'Mission & Well-being': 'medium'}]