PatchTheCVECVE-2026-18963: A flaw was found in the reset-credentials flow of the keycloak-services component, which is the core engine fo
CVE-2026-18963 is a critical-severity flaw (CVSS 9.1) affecting affected software. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
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.
Why this priority
- Critical severity
- EPSS top 6%: very likely to be exploited
- Public exploit reference
- CISA SSVC: automatable with total technical impact
- Remotely exploitable, no login, no user action
A fixed release or distro patch exists.
Risk facts
| CVSS score | 9.1 (Critical) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | None |
| User interaction | None |
| EPSS exploit chance | 6.4% (top 6%) |
| CISA exploited list | No |
| Weakness | CWE-640 |
| Published | 2026-08-18 |
| Last modified | 2026-10-23 |
Last updated 2026-10-23 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Timeline
- Published CVE record published
- Updated Record last modified
Exact fixes by distribution
Public exploits and detection
Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.
- GitHub PoC: ynsmroztas/KeySniper (120 stars)
- GitHub PoC: Snizi/CVE-2026-18963-Exploit (45 stars)
- GitHub PoC: Red-Darkin/CVE-2026-18963-keycloak (20 stars)
- Exploit-DB: Keycloak 26.7.2 - Unauthenticated Account Takeover
- Nuclei scan template: Keycloak < 26.7.2 - Unauthenticated Account Takeover via Reset-Credentials Bypass
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2026-18963?
No fixed release is listed yet. Watch the vendor advisory and apply any mitigation shown on this page.
Is CVE-2026-18963 being exploited?
CVE-2026-18963 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2026-18963 affect?
CVE-2026-18963 affects affected software. Severity is critical (CVSS 9.1). 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
How urgent is CVE-2026-18963?
Priority 68/100. Critical severity; EPSS top 6%: very likely to be exploited; Public exploit reference; CISA SSVC: automatable with total technical impact; Remotely exploitable, no login, no user action