CVE-2026-105944 Falta de autenticación y autorización en Apache Pulsar Manager

Qué es CVE-2026-105944

Apache Pulsar Manager presenta varios problemas de seguridad: la operación para crear la cuenta inicial de administrador está disponible sin autenticación y sigue disponible después de inicializar la instancia, por lo que cualquiera que alcance Pulsar Manager puede crear una cuenta de administrador adicional e iniciar sesión con ella (afecta a versiones 0.3.0 y posteriores). Además, las peticiones a la API de administración de Pulsar que Pulsar Manager reenvía al clúster configurado no están sujetas a la…

Productos y versiones afectadas

• Apache Software Foundation Apache Pulsar Manager

  • desde 0.1.0 hasta 0.4.0

Qué hacer

1. Verificá si usás Apache Pulsar Manager y en qué versión: el rango afectado figura arriba.
2. Actualizá a la versión corregida que indique el fabricante en su aviso (ver referencias) o aplicá la mitigación que publique.
3. Revisá registros y accesos de los sistemas expuestos para descartar que se haya aprovechado antes de corregir.

Calculadora CVSS

CVSS 4.0 · 10.0 CRÍTICA

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H

VECTOR DE ATAQUE (AV)

Red

COMPLEJIDAD DEL ATAQUE (AC)

Baja

REQUISITOS DEL ATAQUE (AT)

Ninguno

PRIVILEGIOS REQUERIDOS (PR)

Ninguno

INTERACCIÓN DEL USUARIO (UI)

Ninguna

CONFIDENCIALIDAD (SISTEMA VULNERABLE) (VC)

Alta

INTEGRIDAD (SISTEMA VULNERABLE) (VI)

Alta

DISPONIBILIDAD (SISTEMA VULNERABLE) (VA)

Alta

CONFIDENCIALIDAD (SISTEMAS POSTERIORES) (SC)

Alta

INTEGRIDAD (SISTEMAS POSTERIORES) (SI)

Alta

DISPONIBILIDAD (SISTEMAS POSTERIORES) (SA)

Alta

Abrir la calculadora completa →

Descripción original

Apache Pulsar Manager is a web console for administering Apache Pulsar clusters. It has its own user accounts and login, and it can be configured with an HTTP authentication credential, such as a token, that it uses to call the Pulsar admin API on behalf of its users. Pulsar Manager has the following security issues: - The operation for creating the initial administrator (superuser) account is available without authentication, and it remains available after the instance has been initialized. Anyone who can reach Pulsar Manager can create an additional administrator account at any time and log in with it. This issue affects versions 0.3.0 and later. - Requests to the Pulsar admin API that Pulsar Manager proxies to the configured Pulsar cluster are not subject to Pulsar Manager's authentication. Version 0.2.0 checks the caller's permissions for some of these requests, but not for all of them. An unauthenticated user can therefore use Pulsar Manager to send requests to the Pulsar admin API, which the cluster processes with the credential configured in Pulsar Manager. - The destination of a proxied request can be chosen by the requester, and Pulsar Manager attaches its configured Pulsar admin credential to the request. An unauthenticated user can make Pulsar Manager send this credential to a host of the user's choosing, and the credential can then be used directly against the Pulsar cluster. - In versions 0.3.0 and later, Pulsar Manager does not distinguish between privilege levels of its accounts. Every account, including one created through the first issue, effectively has full administrative privileges in Pulsar Manager. The impact depends on the version and the deployment. In versions 0.3.0 and later, any user who can reach Pulsar Manager over the network can take full control of Pulsar Manager. In all versions, when Pulsar Manager is configured with an HTTP authentication credential for a Pulsar cluster, any user who can reach Pulsar Manager can perform the Pulsar admin operations that this credential permits and can obtain the credential itself. When Pulsar Manager is configured with the token signing key of a Pulsar cluster, an administrator of Pulsar Manager can create tokens for the cluster. Apache Pulsar Manager is no longer maintained and is completely unsupported. The Apache Pulsar PMC has retired it. There are no supported versions, and no further releases, fixes or security updates will be made for any version. These issues will not be fixed. Using Pulsar Manager is not recommended. Users should stop using Pulsar Manager, remove existing deployments, and move to one of the alternatives described in the Administration UI documentation (https://pulsar.apache.org/docs/administration-ui). Users who have exposed Pulsar Manager configured with a Pulsar credential or token signing key should also consider replacing that credential or key. Until a deployment is removed, users should not expose Pulsar Manager to untrusted networks, and should restrict network access to it to trusted administrators.

Referencias

• pulsar.apache.org/security/CVE-2026-105944/VENDOR-ADVISORY
• pulsar.apache.org/docs/administration-ui
• lists.apache.org/thread.html/hol3z7fzhjntwvrv8xqqwx4l4d2jx796VENDOR-ADVISORY
• www.openwall.com/lists/oss-security/2026/10/21/26

Historial de la alerta

1. 21 OCT · 16:26VULNERABILIDAD Nueva vulnerabilidad detectada.

CÓMO SE HIZOResumen traducido automáticamente al español a partir de la descripción original. Ante dudas, la descripción original y las referencias del fabricante son la fuente de verdad. Cómo funciona.