CVE-2026-49098Public exploitNetwork attack vector

Message redirection via unfiltered Kafka control header

Published Jul 6, 2026 · Updated Jul 6, 2026

Header injection in affected Apache Camel releases allows remote attackers to redirect Kafka messages through crafted HTTP headers. KafkaProducer.evaluateTopic() prefers the untrusted kafka.OVERRIDE_TOPIC Exchange header over the endpoint's configured topic because the upstream HTTP filter does not block the non-Camel-prefixed name. Reachability requires an HTTP-consumer-to-Kafka-producer route; an unauthenticated consumer lets attackers write forged records to unintended topics.

CVSS severity5.3
Medium
EPSS probability0.61%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Header injection in affected Apache Camel releases allows remote attackers to redirect Kafka messages through crafted HTTP headers. KafkaProducer.evaluateTopic() prefers the untrusted kafka.OVERRIDE_TOPIC Exchange header over the endpoint's configured topic because the upstream HTTP filter does not block the non-Camel-prefixed name. Reachability requires an HTTP-consumer-to-Kafka-producer route; an unauthenticated consumer lets attackers write forged records to unintended topics.

The record

CVE
CVE-2026-49098
Published
Jul 6, 2026
Updated
Jul 6, 2026
Vendor
The Apache Software Foundation
Product
Apache Camel
Classifications
CWE-74, CWE-20, T1565.002
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 6, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 6, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=4.0.0 <4.14.8
  2. Affected versionversion=4.15.0 <4.18.3
  3. Affected versionversion=4.19.0 <4.21.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

The Apache Software Foundation · Apache Camelversion=4.0.0 <4.14.8; version=4.15.0 <4.18.3; version=4.19.0 <4.21.0

Published CVSS scores

5.3CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-74Improper Neutralization of Special Elements in Output Used by a Downstream Component
CWE-20Improper Input Validation
T1565.002Transmitted Data Manipulation

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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