CVE-2026-82561

Gravedad CVSS v4.0:

MEDIA

Tipo:

No Disponible / Otro tipo

Fecha de publicación:

16/09/2026

Última modificación:

21/09/2026

Descripción

*** Pendiente de traducción *** Apache NiFi 1.5.0 through 2.11.0 provide REST API methods that replace the entire contents of a Process Group using a client-supplied flow definition, covering Process Group flow replacement together with versioned flow update and rebase operations. Framework authorization for these methods was limited to read and write privileges on the Process Group itself, unlike the corresponding asynchronous update request methods, which also authorize the components encapsulated in the Process Group along with referenced Controller Services, Parameter Contexts, and Parameter Providers. As a result of the missing authorization, an authenticated user with write access to a Process Group could supply a flow definition that modifies or removes components in descendant Process Groups protected by more restrictive access policies, and could bind components to Controller Services and Parameter Contexts without authorization for those referenced components. Existing verification checks limited the impact to stopped components, and the issue applies only to deployments that use component-level authorization policies, because the framework enforces write permissions as the security boundary. Upgrading to Apache NiFi 2.12.0 is the recommended mitigation, which applies consistent reference resolution and component authorization across Process Group replacement and versioned flow update methods

Impacto

Vector 4.0

CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:L/VI:H/VA:L/SC:L/SI:L/SA:L/S:N/AU:Y/R:U/V:C/RE:L/U:Clear CVSS v4.0 Severidad y Métricas:

Puntuación base: 5.90 MEDIA
Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:L/VI:H/VA:L/SC:L/SI:L/SA:L/S:N/AU:Y/R:U/V:C/RE:L/U:Clear

Vector de acceso (AV): A través de red
Complejidad de acceso (AC): Bajo
Attack Requirements (AT): Present
Privilegios Requeridos (PR): Alto
Interacción del usuario (UI): Ninguno
Confidentiality (VC): Bajo
Integrity (VI): Alto
Availability (VA): Bajo
Confidentiality (SC): Bajo
Integrity (SI): Bajo
Availability (SA): Bajo
Safety (S): Negligible
Automatable (AU): Si
Recovery (R): Usuario
Value Density (V): Concentrated
Vulnerability Response Effort (RE): Bajo
Provider Urgency (U): Limpiar

Puntuación base 4.0

5.90

Gravedad 4.0

MEDIA

Vector 3.x

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N CVSS v3.1 Severidad y Métricas:

Puntuación base: 6.50 MEDIA
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

Vector de acceso (AV): A través de red
Complejidad de acceso (AC): Bajo
Privilegios Requeridos (PR): Bajo
Interacción del usuario (UI): Ninguno
Alcance (S): Sin modificar
Impacto a la confidencialidad (C): Ninguno
Impacto a la integridad (I): Alto
Impacto a la disponibilidad (A): Ninguno