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

CWE-178

https://access.redhat.com/errata/RHSA-2026:17668

https://access.redhat.com/errata/RHSA-2026:19835

https://access.redhat.com/security/cve/CVE-2026-40453

https://bugzilla.redhat.com/show_bug.cgi?id=2463173

https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-40453.json

[{"vendor":"Red Hat","product":"Red Hat Build of Apache Camel 4.14 for Quarkus 3.27","defaultStatus":"affected","cpes":["cpe:/a:redhat:apache_camel_quarkus:3.27"]},{"vendor":"Red Hat","product":"Red Hat build of Apache Camel 4.18.1 for Spring Boot 3.5.14","defaultStatus":"affected","cpes":["cpe:/a:redhat:apache_camel_spring_boot:4.18"]},{"vendor":"Red Hat","product":"Red Hat build of Apache Camel 4 for Quarkus 3","defaultStatus":"affected","cpes":["cpe:/a:redhat:camel_quarkus:3"]},{"vendor":"Red Hat","product":"Red Hat Fuse 7","defaultStatus":"unaffected","cpes":["cpe:/a:redhat:jboss_fuse:7"]},{"vendor":"Red Hat","product":"Red Hat JBoss Enterprise Application Platform 8","defaultStatus":"unaffected","cpes":["cpe:/a:redhat:jboss_enterprise_application_platform:8"]},{"vendor":"Red Hat","product":"Red Hat JBoss Enterprise Application Platform Expansion Pack","defaultStatus":"unaffected","cpes":["cpe:/a:redhat:jbosseapxp"]},{"vendor":"Red Hat","product":"Red Hat Process Automation 7","defaultStatus":"unaffected","cpes":["cpe:/a:redhat:jboss_enterprise_bpms_platform:7"]},{"vendor":"Red Hat","product":"Red Hat Single Sign-On 7","defaultStatus":"unaffected","cpes":["cpe:/a:redhat:red_hat_single_sign_on:7"]},{"vendor":"Red Hat","product":"OpenShift Serverless","defaultStatus":"unknown","cpes":["cpe:/a:redhat:serverless:1"]}]

{"timestamp":"2026-04-27T00:00:00+00:00","id":"CVE-2026-40453","options":[{"exploitation":"none"},{"automatable":"no"},{"technicalImpact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}

[{"vendor":"Apache Software Foundation","product":"Apache Camel JMS","defaultStatus":"unaffected","collectionURL":"https://repo.maven.apache.org/maven2","packageName":"org.apache.camel:camel-jms","versions":[{"version":"3.0.0","lessThan":"4.14.6","versionType":"semver","status":"affected"},{"version":"4.15.0","lessThan":"4.18.2","versionType":"semver","status":"affected"},{"version":"4.19.0","lessThan":"4.20.0","versionType":"semver","status":"affected"}]},{"vendor":"Apache Software Foundation","product":"Apache Camel CoAP","defaultStatus":"unaffected","collectionURL":"https://repo.maven.apache.org/maven2","packageName":"org.apache.camel:camel-coap","versions":[{"version":"3.0.0","lessThan":"4.14.6","versionType":"semver","status":"affected"},{"version":"4.15.0","lessThan":"4.18.2","versionType":"semver","status":"affected"},{"version":"4.19.0","lessThan":"4.20.0","versionType":"semver","status":"affected"}]},{"vendor":"Apache Software Foundation","product":"Apache Camel Google PubSub","defaultStatus":"unaffected","collectionURL":"https://repo.maven.apache.org/maven2","packageName":"org.apache.camel:camel-google-pubsub","versions":[{"version":"3.0.0","lessThan":"4.14.6","versionType":"semver","status":"affected"},{"version":"4.15.0","lessThan":"4.18.2","versionType":"semver","status":"affected"},{"version":"4.19.0","lessThan":"4.20.0","versionType":"semver","status":"affected"}]}]

OR
          *cpe:2.3:a:apache:camel:4.19.0:*:*:*:*:*:*:*
          *cpe:2.3:a:apache:camel:*:*:*:*:*:*:*:* versions from (including) 3.0.0 up to (excluding) 4.14.6
          *cpe:2.3:a:apache:camel:*:*:*:*:*:*:*:* versions from (including) 4.15.0 up to (excluding) 4.18.2

Apache Software Foundation: https://camel.apache.org/security/CVE-2026-40453.html Types: Vendor Advisory

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

The fix for CVE-2025-27636 added setLowerCase(true) to HttpHeaderFilterStrategy so that case-variant header names such as 'CAmelExecCommandExecutable' are filtered out alongside 'CamelExecCommandExecutable'. The same setLowerCase(true) call was not applied to five non-HTTP HeaderFilterStrategy implementations: JmsHeaderFilterStrategy and ClassicJmsHeaderFilterStrategy in camel-jms, SjmsHeaderFilterStrategy in camel-sjms, CoAPHeaderFilterStrategy in camel-coap, and GooglePubsubHeaderFilterStrategy in camel-google-pubsub. Because those strategies use case-sensitive String.startsWith('Camel'/'camel') filtering while the Camel Exchange stores headers in a case-insensitive map, an attacker with JMS (or equivalent) producer access to the broker consumed by a Camel route can inject case-variant Camel internal headers, which are then resolved by downstream components such as camel-exec and camel-file using their canonical casing. This enables remote code execution and arbitrary file write on routes that forward JMS messages to header-driven components.

This issue affects Apache Camel: from 3.0.0 before 4.14.6, from 4.15.0 before 4.18.2, from 4.19.0 before 4.20.0.

Users are recommended to upgrade to version 4.20.0, which fixes the issue. If users are on the 4.14.x LTS releases stream, then they are suggested to upgrade to 4.14.6. If users are on the 4.18.x releases stream, then they are suggested to upgrade to 4.18.2.

CWE-178

https://camel.apache.org/security/CVE-2026-40453.html