Critical, CVSS 9.9MavenPublished
Apache Camel has an incomplete fix for CVE-2025-27636
CVE-2026-40453 · GHSA-jg2m-9x48-3gvj
- Affected
- Maven org.apache.camel:camel-google-pubsub >= 3.0.0, < 4.14.6; >= 4.15.0, < 4.18.2; >= 4.19.0, < 4.20.0
- Fixed in
- 4.18.24.14.64.20.0· Vendor fix available
- Issue
- 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…
Recommended action: Upgrade to 4.20.0, 4.18.2 or 4.14.6 by release line, then redeploy and verify.A vendor fix does not resolve your finding until you verify it in your own systems.