All vulnerabilities
CVE-2026-18963

Keycloak-services: keycloak-services: unauthenticated account takeover via reset-credentials flow bypass

Red Hat Red Hat build of Keycloak 26.4Identity & access
Open in ThreatlineRecord JSON
CVSS
9.1Critical
ExploitationPublic exploit codeWebapps exploit, 21 Oct 2026. Not in the KEV catalogExploit-DB
Exploit odds (EPSS)6.41%Chance of exploitation activity in the next 30 days, higher than 93% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed inNone listedNo source names a fixed version. Check the vendor advisory below
Published18 Aug 2026Updated 23 Oct 2026CVE List

What fixes it

No source in this snapshot names a fixed version. The vendor advisories under References are the place to check.

Timeline

  1. 18 Aug 2026, 17:05 UTCPublishedCVE List
  2. 21 Oct 2026Exploit code publicExploit-DB

Public exploit code and templates 2

  • Webapps exploitKeycloak 26.7.2 - Unauthenticated Account Takeover 21 Oct 2026Exploit-DB
  • Scanner templateKeycloak < 26.7.2 - Unauthenticated Account Takeover via Reset-Credentials BypassNuclei

Listed so defenders can prioritize. Threatline links to the source and does not host exploit code.

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.

Text from CVE List

Affected versions 4

  • Red Hat build of Keycloak 26.4unaffected: 26.4.15-1 and laterCVE List
  • Red Hat build of Keycloak 26.4unaffected: 26.4-23 and laterCVE List
  • Red Hat build of Keycloak 26.6unaffected: 26.6.6-1 and laterCVE List
  • Red Hat build of Keycloak 26.6unaffected: 26.6-12 and laterCVE List

References 7