CVE-2026-88901 XXE en Camel-Smooks de Apache Camel con entidades externas resueltas por defecto

Qué es CVE-2026-88901

Vulnerabilidad de restricción inadecuada de referencias a entidades externas XML en el componente Smooks (camel-smooks) de Apache Camel que afecta a las versiones 4.7.0 a anteriores a 4.18.5 y 4.19.0 a anteriores a 4.22.1. El data format y el componente Smooks parsean el cuerpo XML entrante con el parser Woodstox por defecto, que resuelve entidades externas y carga DTDs externos, permitiendo a un atacante que controla el cuerpo leer archivos locales o hacer peticiones a ubicaciones de red internas.

Productos y versiones afectadas

• Apache Software Foundation Apache Camel

  • desde 4.7.0 hasta antes de 4.18.5
  • desde 4.19.0 hasta antes de 4.22.1

Qué hacer

1. Verificá si usás Apache Camel 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 3.1 · 8.2 ALTA

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:L

VECTOR DE ATAQUE (AV)

Red

COMPLEJIDAD DEL ATAQUE (AC)

Baja

PRIVILEGIOS REQUERIDOS (PR)

Ninguno

INTERACCIÓN DEL USUARIO (UI)

Ninguna

ALCANCE (S)

Sin cambio

CONFIDENCIALIDAD (C)

Alta

INTEGRIDAD (I)

Ninguna

DISPONIBILIDAD (A)

Baja

Abrir la calculadora completa →

Descripción original

Improper Restriction of XML External Entity Reference vulnerability in Apache Camel. This issue affects Apache Camel: from 4.7.0 before 4.18.5, from 4.19.0 before 4.22.1. Improper Restriction of XML External Entity Reference in the Smooks component (camel-smooks) in Apache Camel allows an attacker who supplies the XML message body to read local files or issue requests to internal network locations via an external entity declaration in that body. This issue affects Apache Camel: from 4.7.0 before 4.18.5, from 4.19.0 before 4.22.1. The Smooks data format (.unmarshal().smooks(...)) and the Smooks component (smooks:) parse the incoming XML body with the reader Smooks resolves by default, which is the Woodstox SAX parser. That reader resolves external general and parameter entities and loads external DTDs, and camel-smooks applied none of the parser hardening that the other Camel XML components apply. A DOCTYPE with an external subset, or an external general entity, declared in the XML document is therefore resolved and expanded while the body is unmarshalled, and the resolved content is bound into the unmarshalled result and returned on InOut routes. An external sender whose XML reaches a camel-smooks data format or endpoint could therefore read files readable by the Camel process and cause the process to issue requests to hosts the document names. No non-default option is required, since resolving external entities was the default behaviour. Configurations that declare their own reader - EDI, CSV, JSON, or a custom reader - do not use the XML reader and are not affected. Users are recommended to upgrade to version 4.18.5, 4.22.1 or 4.23.0, which fixes the issue. Upgrade to Apache Camel 4.23.0, which fixes the issue. Users on the 4.18.x LTS releases stream should upgrade to 4.18.5. Users on the 4.22.x LTS releases stream should upgrade to 4.22.1. camel-smooks now parses the XML body with a javax.xml.parsers.DocumentBuilder that does not resolve external general or parameter entities and does not load external DTDs, and hands Smooks the resulting document, matching the secure XML processing configuration used by org.apache.camel.converter.jaxp.XmlConverter and the other Camel XML components. This hardening is applied only when the Smooks configuration parses XML with its default reader, so EDI, CSV, JSON and custom-reader configurations, and the marshalling direction, are unchanged. A new allowExternalEntities option, disabled by default, restores the previous behaviour for trusted legacy configurations that rely on external entity resolution. The camel-4.14.x releases stream and earlier reached end of life before this issue was resolved and will not receive a fix, so deployments on those lines must move to a supported release. For deployments that cannot upgrade immediately, do not apply camel-smooks to XML received from untrusted senders.

Referencias

• camel.apache.org/security/CVE-2026-88901.htmlVENDOR-ADVISORY
• issues.apache.org/jira/browse/CAMEL-24677ISSUE-TRACKING
• github.com/apache/camel/pull/26270PATCH
• github.com/apache/camel/pull/26327PATCH
• github.com/apache/camel/pull/26329PATCH

Historial de la alerta

1. 19 OCT · 10:04VULNERABILIDAD 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.