Medium [CVE-2026-95664] Expression language injection via untrusted S3 object keys
This medium-severity Red Hat Linux advisory covers CVE-2026-95664; related products: OpenShift Serverless, Red Hat build of Apache Camel 4 for Quarkus 3, Red Hat build of Apache Camel for Spring Boot 4.
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Summary
Expression language injection via untrusted S3 object keys. Red Hat rates this moderate (CVSS 5.4).
Weakness: CWE-917.
Affected products named by the advisory: OpenShift Serverless; Red Hat build of Apache Camel 4 for Quarkus 3; Red Hat build of Apache Camel for Spring Boot 4; Red Hat Fuse 7.
- < 4.8.0
- < 4.18.5
- < 4.19.0
- < 4.22.2
- < 4.8.x
- < 4.17.x
- < 4.19.x
- < 4.21.x
- 4.17
- 4.19
- 4.21
Official advisory · high-confidence parse· fetched 2 days ago·verify at source
- 4.23.0
- 4.22
- 4.22.2
- 4.18
- 4.18.5
Official advisory · high-confidence parse· fetched 2 days ago·verify at source
Mitigation checklist
- To mitigate this vulnerability without replacing component packages, configure Camel routes to prevent untrusted S3 object keys from reaching the aws2-s3 producer: 1. In routes transferring messages from an aws2-s3 consumer to an aws2-s3 producer, explicitly remove the `CamelAwsS3Key` header prior to the producer step using `<removeHeader name="CamelAwsS3Key"/>` in XML DSL or `.removeHeader("CamelAwsS3Key")` in Java DSL. Define the intended object destination via the producer endpoint's `keyName` option. 2. Alternatively, insert route validation logic to reject or filter out exchanges whose `CamelAwsS3Key` header contains expression markers such as `${` or `$simple{`. 3. As an operational control, restrict write and upload permissions on source S3 buckets strictly to trusted principals. Warning: Modifying and applying route configuration changes requires reloading or restarting the affected integration services, which may cause a temporary service disruption.
Official advisory · high-confidence parse· fetched 2 days ago·verify at source
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