Critical severity9.1NVD Advisory· Published Aug 18, 2026· Updated Sep 8, 2026
CVE-2026-18963
CVE-2026-18963
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
org.keycloak:keycloak-servicesMaven | >= 26.0.0, < 26.4.15 | 26.4.15 |
org.keycloak:keycloak-servicesMaven | >= 26.5.0, < 26.6.6 | 26.6.6 |
org.keycloak:keycloak-servicesMaven | >= 26.7.0, < 26.7.2 | 26.7.2 |
Affected products
2Patches
Vulnerability mechanics
References
12- github.com/advisories/GHSA-4gv3-mc9p-5wqcghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2026-18963ghsaADVISORY
- access.redhat.com/errata/RHSA-2026:56519nvdWEB
- access.redhat.com/errata/RHSA-2026:56520nvdWEB
- access.redhat.com/errata/RHSA-2026:56523nvdWEB
- access.redhat.com/errata/RHSA-2026:56524nvdWEB
- access.redhat.com/security/cve/CVE-2026-18963nvdWEB
- bugzilla.redhat.com/show_bug.cginvdWEB
- github.com/keycloak/keycloak/commit/dc2d4e524b4dae85aedc87ca28b9e4fa567d56c1ghsaWEB
- github.com/keycloak/keycloak/issues/51833ghsaWEB
- github.com/keycloak/keycloak/pull/51844ghsaWEB
- cert-portal.siemens.com/productcert/html/ssa-503852.htmlnvd
News mentions
4- Critical Red Hat Keycloak Flaw Lets Unauthenticated Attackers Take Over Any User AccountCyber Security News · Aug 25, 2026
- ⚡ Weekly Recap: AI-Powered PLC Attacks, GitLab Attacks, Stripe Key Leaks and MoreThe Hacker News · Aug 24, 2026
- Critical Keycloak Password Reset Flaw Could Let Unauthenticated Attackers Take Over Any AccountThe Hacker News · Aug 24, 2026
- Siemens Industrial Edge ManagementCISA ICS Advisories