VulnSocial

CVE-2021-4133General(redhat / keycloak)

LOWCVSS 8.8 · HIGH

Signal is active with 1 mentions in latest observed window

Immediate actions

  • Track advisory updates for patch or workaround availability

Recommended action window: Monitor and triage in normal cycle

NVD description

A flaw was found in Keycloak in versions from 12.0.0 and before 15.1.1 which allows an attacker with any existing user account to create new default user accounts via the administrative REST API even when new user registration is disabled.

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0.0/ 10 priority

Sources & remediation

Vendor / third-party advisories
Other references
Weakness type (CWE)
CWE-863

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

NONE

Momentum

NONE

Are you affected?

If you run products in this scope, you should treat this CVE as relevant to your environment.

  • keycloak

Threat summary

  • 1 mentions across 1 observed day

What's happening

  • General: 1 classified signal
  • 1 total mentions across 1 day

Affected systems

Vendors
redhat
Products
keycloak

Deep dive

Activity timeline1 mentions / 1d
00111Mentions · 2026-09-04: 109-04
Signal classification1 categories
General
1100.0%
Full discourse1 post
  • Mathieu Passenaud@mathieupassenau
    General

    @hanxhx_ et pas que, tu sais il y a des Keycloak tellement vieux que tu peux retrouver la CVE-2026-1529 ou encore cve-2021-4133

    Post summary

    The post merely mentions that older Keycloak installations may contain CVE-2026-1529 or CVE-2021-4133, without providing further technical or exploit information.

    10001320
    1.7K followersView on X
CPE platform detail1 entries

1 of 1 entries

PartVendorProductVersionTarget SWTarget HW
Appredhatkeycloak---

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