FKIE_CVE-2026-49098

Vulnerability from fkie_nvd - Published: 2026-07-06 09:16 - Updated: 2026-07-06 11:16
Severity
Summary
Improper Input Validation, Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection') vulnerability in Apache Camel Kafka Component. The camel-kafka producer can override its configured target topic at runtime from the kafka.OVERRIDE_TOPIC Exchange header: KafkaProducer.evaluateTopic() returns the header value in preference to the topic configured on the endpoint. The control-header constants in KafkaConstants (for example OVERRIDE_TOPIC = kafka.OVERRIDE_TOPIC, OVERRIDE_TIMESTAMP = kafka.OVERRIDE_TIMESTAMP, PARTITION_KEY = kafka.PARTITION_KEY) used plain, non-Camel-prefixed values. camel-kafka's own KafkaHeaderFilterStrategy does filter the kafka.* namespace, but only on the Kafka-to-Exchange serialization boundary (reading Kafka record headers into the Exchange, and writing Exchange headers into a Kafka record); it does not apply to headers that arrive from an upstream consumer in a multi-component route. The upstream HTTP consumer uses HttpHeaderFilterStrategy, which blocks only the Camel / camel namespace, so a kafka.* header passes through unfiltered. As a result, in a route that bridges an HTTP consumer (for example platform-http) into a kafka: producer, any HTTP client could set the kafka.OVERRIDE_TOPIC header and cause the message to be published to an arbitrary Kafka topic instead of the configured one - redirecting it to a sensitive internal topic, or injecting attacker-crafted messages into a topic consumed by a critical downstream service. The related kafka.OVERRIDE_TIMESTAMP and kafka.PARTITION_KEY headers could likewise be injected to backdate messages or target specific partitions. No credentials are required when the bridging consumer is unauthenticated. This issue affects Apache Camel: from 4.0.0 before 4.14.8, from 4.15.0 before 4.18.3, from 4.19.0 before 4.21.0. Users are recommended to upgrade to version 4.21.0, which fixes the issue. If users are on the 4.14.x LTS releases stream, then they are suggested to upgrade to 4.14.8. If users are on the 4.18.x releases stream, then they are suggested to upgrade to 4.18.3. After upgrading, routes that set or read Kafka headers via the raw header names must use the CamelKafka* names (for example CamelKafkaOverrideTopic and CamelKafkaTopic) instead of the old kafka.* values. For deployments that cannot upgrade immediately, strip the kafka.* headers from any untrusted ingress before the kafka: producer (for example removeHeaders('kafka.*') at the start of the route), and set the target topic from a trusted source.
References
security@apache.orghttps://camel.apache.org/security/CVE-2026-49098.html
af854a3a-2127-422b-91ae-364da2661108http://www.openwall.com/lists/oss-security/2026/07/05/23
Impacted products
Vendor Product Version
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{
  "affected": [
    {
      "affectedData": [
        {
          "collectionURL": "https://repo.maven.apache.org/maven2",
          "defaultStatus": "unaffected",
          "packageName": "org.apache.camel:camel-kafka",
          "product": "Apache Camel",
          "vendor": "Apache Software Foundation",
          "versions": [
            {
              "lessThan": "4.14.8",
              "status": "affected",
              "version": "4.0.0",
              "versionType": "semver"
            },
            {
              "lessThan": "4.18.3",
              "status": "affected",
              "version": "4.15.0",
              "versionType": "semver"
            },
            {
              "lessThan": "4.21.0",
              "status": "affected",
              "version": "4.19.0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "source": "security@apache.org"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Improper Input Validation, Improper Neutralization of Special Elements in Output Used by a Downstream Component (\u0027Injection\u0027) vulnerability in Apache Camel Kafka Component.\n\nThe camel-kafka producer can override its configured target topic at runtime from the kafka.OVERRIDE_TOPIC Exchange header: KafkaProducer.evaluateTopic() returns the header value in preference to the topic configured on the endpoint. The control-header constants in KafkaConstants (for example OVERRIDE_TOPIC = kafka.OVERRIDE_TOPIC, OVERRIDE_TIMESTAMP = kafka.OVERRIDE_TIMESTAMP, PARTITION_KEY = kafka.PARTITION_KEY) used plain, non-Camel-prefixed values. camel-kafka\u0027s own KafkaHeaderFilterStrategy does filter the kafka.* namespace, but only on the Kafka-to-Exchange serialization boundary (reading Kafka record headers into the Exchange, and writing Exchange headers into a Kafka record); it does not apply to headers that arrive from an upstream consumer in a multi-component route. The upstream HTTP consumer uses HttpHeaderFilterStrategy, which blocks only the Camel / camel namespace, so a kafka.* header passes through unfiltered. As a result, in a route that bridges an HTTP consumer (for example platform-http) into a kafka: producer, any HTTP client could set the kafka.OVERRIDE_TOPIC header and cause the message to be published to an arbitrary Kafka topic instead of the configured one - redirecting it to a sensitive internal topic, or injecting attacker-crafted messages into a topic consumed by a critical downstream service. The related kafka.OVERRIDE_TIMESTAMP and kafka.PARTITION_KEY headers could likewise be injected to backdate messages or target specific partitions. No credentials are required when the bridging consumer is unauthenticated.\nThis issue affects Apache Camel: from 4.0.0 before 4.14.8, from 4.15.0 before 4.18.3, from 4.19.0 before 4.21.0.\n\nUsers are recommended to upgrade to version 4.21.0, which fixes the issue. If users are on the 4.14.x LTS releases stream, then they are suggested to upgrade to 4.14.8. If users are on the 4.18.x releases stream, then they are suggested to upgrade to 4.18.3. After upgrading, routes that set or read Kafka headers via the raw header names must use the CamelKafka* names (for example CamelKafkaOverrideTopic and CamelKafkaTopic) instead of the old kafka.* values. For deployments that cannot upgrade immediately, strip the kafka.* headers from any untrusted ingress before the kafka: producer (for example removeHeaders(\u0027kafka.*\u0027) at the start of the route), and set the target topic from a trusted source."
    },
    {
      "lang": "es",
      "value": "Vulnerabilidad por validaci\u00f3n inadecuada de entradas y neutralizaci\u00f3n incorrecta de elementos especiales en la salida utilizada por un componente posterior (inyecci\u00f3n) en el componente Apache Camel Kafka. El productor camel-kafka puede anular el tema de destino configurado en tiempo de ejecuci\u00f3n a trav\u00e9s del encabezado kafka.OVERRIDE_TOPIC de Exchange: KafkaProducer.evaluateTopic() devuelve el valor del encabezado en lugar del tema configurado en el punto final. Las constantes de los encabezados de control en KafkaConstants (por ejemplo, OVERRIDE_TOPIC = kafka.OVERRIDE_TOPIC, OVERRIDE_TIMESTAMP = kafka.OVERRIDE_TIMESTAMP, PARTITION_KEY = kafka. PARTITION_KEY) utilizan valores simples, sin prefijo Camel. La propia estrategia KafkaHeaderFilterStrategy de camel-kafka filtra el espacio de nombres kafka.*, pero solo en el l\u00edmite de serializaci\u00f3n de Kafka a Exchange (al leer los encabezados de los registros de Kafka en Exchange y al escribir los encabezados de Exchange en un registro de Kafka); no se aplica a los encabezados que llegan desde un consumidor anterior en una ruta de m\u00faltiples componentes. El consumidor HTTP anterior utiliza HttpHeaderFilterStrategy, que solo bloquea el espacio de nombres Camel / camel, por lo que un encabezado kafka.* pasa sin ser filtrado. Como resultado, en una ruta que conecta un consumidor HTTP (por ejemplo, platform-http) con un productor kafka:, cualquier cliente HTTP podr\u00eda establecer el encabezado kafka.OVERRIDE_TOPIC y provocar que el mensaje se publique en un tema de Kafka arbitrario en lugar del configurado, redirigi\u00e9ndolo a un tema interno sensible o inyectando mensajes creados por un atacante en un tema consumido por un servicio cr\u00edtico posterior. Los encabezados relacionados kafka.OVERRIDE_TIMESTAMP y kafka.PARTITION_KEY tambi\u00e9n podr\u00edan inyectarse para antedatar mensajes o dirigirlos a particiones espec\u00edficas. No se requieren credenciales cuando el consumidor puente no est\u00e1 autenticado. Este problema afecta a Apache Camel: desde la versi\u00f3n 4.0.0 hasta la 4.14.8, desde la 4.15.0 hasta la 4.18.3 y desde la 4.19.0 hasta la 4.21.0. Se recomienda a los usuarios que actualicen a la versi\u00f3n 4.21.0, que corrige el problema. Si los usuarios utilizan las versiones LTS de la rama 4.14.x, se les sugiere que actualicen a la 4.14.8. Si los usuarios utilizan las versiones de la rama 4.18.x, se les sugiere que actualicen a la 4.18.3. Tras la actualizaci\u00f3n, las rutas que establezcan o lean encabezados de Kafka mediante los nombres de encabezado sin formato deben utilizar los nombres CamelKafka* (por ejemplo, CamelKafkaOverrideTopic y CamelKafkaTopic) en lugar de los antiguos valores kafka.*. En el caso de las implementaciones que no puedan actualizarse de inmediato, elimine los encabezados \u00abkafka.*\u00bb de cualquier entrada no fiable antes del productor kafka: (por ejemplo, removeHeaders(\u201ckafka.*\u201d) al inicio de la ruta) y establezca el tema de destino a partir de una fuente fiable."
    }
  ],
  "id": "CVE-2026-49098",
  "lastModified": "2026-07-06T11:16:29.943",
  "metrics": {},
  "published": "2026-07-06T09:16:38.357",
  "references": [
    {
      "source": "security@apache.org",
      "url": "https://camel.apache.org/security/CVE-2026-49098.html"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "http://www.openwall.com/lists/oss-security/2026/07/05/23"
    }
  ],
  "sourceIdentifier": "security@apache.org",
  "vulnStatus": "Received",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-20"
        },
        {
          "lang": "en",
          "value": "CWE-74"
        }
      ],
      "source": "security@apache.org",
      "type": "Secondary"
    }
  ]
}


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