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CVE-2026-56140 concerns the Apache Camel camel-aws2-sns component, specifically Sns2HeaderFilterStrategy. The strategy originally defined only an outbound filter pattern, blocking Camel*, breadcrumbId, and org.apache.camel.* headers from being written out, but did not define a corresponding inbound Camel-namespace filter. Apache noted this was analogous in structure to the exploitable inbound header-filtering gap previously identified in camel-aws2-sqs (CVE-2026-46456). However, in camel-aws2-sns the missing inbound rule was not reachable in practice because the component is producer-only: Sns2Endpoint does not support consumers, and createConsumer throws UnsupportedOperationException. As a result, externally supplied SNS message attributes are not mapped inbound into a Camel Exchange through this component. Apache added an inbound Camel-namespace filter via setInFilterStartsWith under CAMEL-23506 to align Sns2HeaderFilterStrategy with corrected sibling strategies. Apache characterizes this as a defense-in-depth hardening change rather than a fix for a known exploitable path.
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No public exploit code observed for this vulnerability.
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Cross-references every affected SKU, including bundled OEM variants.
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