Medium severity · published Oct 19, 2026
CVE-2026-85247
Apache Camel: Camel-Knative Improper Certificate Validation When SSL Is Enabled Without a Truststore
5.9
CVSS
0.4%
EPSS
No
On KEV
Description
Improper Certificate Validation 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 SSL was enabled on the Knative HTTP client but no truststore was configured, the client options fell back to trusting every presented certificate rather than to the JVM's default trust anchors. A deployment that switched TLS on without also configuring a truststore therefore obtained an encrypted connection with no peer authentication, which an attacker positioned on the network path can terminate and read. The dangerous state is reached by omission rather than by an explicit opt-in, which is what makes it a framework defect: turning TLS on should not be the thing that turns certificate validation off.
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. With no truststore configured the trust options are now left unset so the JVM default trust anchors apply, the same fallback SSLContextParameters and the rest of Camel use. Trusting every certificate is now reached only by asking for it explicitly through the trust.all property, which remains available for development against a cluster with a self-signed certificate. For deployments that cannot upgrade immediately, configure a truststore explicitly wherever SSL is enabled. After upgrading, a deployment that was relying on the implicit trust-all behaviour must either configure a truststore or set the trust.all property deliberately.
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Attack vector
Network
Complexity
High
Privileges
None
User interaction
None
Confidentiality
High
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 36% 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-2026-85247
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-85247
camel.apache.org
https://camel.apache.org/security/CVE-2026-85247.html
github.com
https://github.com/apache/camel/pull/25824
github.com
https://github.com/apache/camel/pull/25944
github.com
https://github.com/apache/camel/pull/25946
issues.apache.org
https://issues.apache.org/jira/browse/CAMEL-24443
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