Medium severity · published Oct 19, 2026
CVE-2026-84180
Apache Camel: Camel-Knative Information Disclosure via Unmuted Consumer Exceptions
5.3
CVSS
0.4%
EPSS
No
On KEV
Description
Generation of Error Message Containing Sensitive Information vulnerability in Apache Camel Knative component.
This issue affects Apache Camel: from 4.0.0 before 4.18.5, from 4.19.0 before 4.22.1.
When processing of an exchange failed on the consumer side, the Knative HTTP consumer wrote the resulting exception back to the remote caller as the response body, including its class name, message and stack trace. An external sender could therefore provoke a failure and read internal detail about the deployment: class and package names, file system or host names carried in exception messages, and the shape of the route. That detail is useful for building a more targeted attack, and where an exception message embeds configuration or connection strings it is disclosure in its own right. camel-knative was the remaining HTTP-family consumer that had not been aligned with the muteException behaviour established for the other HTTP consumers by CAMEL-23651.
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. The consumer now honours a muteException option that defaults to true, so a route failure returns an empty body with the error status rather than the exception. Set muteException=false to restore the previous output. For deployments that cannot upgrade immediately, add an onException handler that sets the response body explicitly, so that the framework never writes the exception back to the caller.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
Low
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 34% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
AC
Apache Camel · Apache Software Foundation
4.0.0 before 4.18.5; 4.19.0 before 4.22.1 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-84180
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-84180
camel.apache.org
https://camel.apache.org/security/CVE-2026-84180.html
github.com
https://github.com/apache/camel/pull/25685
github.com
https://github.com/apache/camel/pull/25835
github.com
https://github.com/apache/camel/pull/25836
issues.apache.org
https://issues.apache.org/jira/browse/CAMEL-24428
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