CVE-2026-56140— Apache Camel AWS2 SNS: An inbound Camel-namespace filter was added to Sns2HeaderFilterStrategy to align it with sibling components

Apache Camel AWS2 SNS: An inbound Camel-namespace filter was added to Sns2HeaderFilterStrategy to align it with sibling components

Improper Input Validation vulnerability in Apache Camel AWS SNS component. The camel-aws2-sns component filters Camel headers through a component-specific HeaderFilterStrategy, Sns2HeaderFilterStrategy. Like the sibling Sqs2HeaderFilterStrategy, it originally configured only an outbound filter (setOutFilterPattern, which blocks Camel*, breadcrumbId and org.apache.camel.* headers from being written out) and did not configure an inbound filter rule. For the related camel-aws2-sqs component this inbound gap was exploitable, because the Sqs2Consumer maps inbound SQS message attributes into the Camel Exchange via HeaderFilterStrategy.applyFilterToExternalHeaders, allowing a message sender to inject Camel control headers (tracked as CVE-2026-46456). camel-aws2-sns, by contrast, is producer-only: Sns2Endpoint does not support consumers (createConsumer throws UnsupportedOperationException, 'You cannot receive messages from this endpoint'), so no externally-supplied message attributes are ever mapped inbound into a Camel Exchange through SNS, and the missing inbound filter rule on Sns2HeaderFilterStrategy was therefore not reachable by an attacker. As part of the same fix (CAMEL-23506), an inbound filter rule (setInFilterStartsWith for the Camel namespace) was added to Sns2HeaderFilterStrategy so that its configuration matches the corrected Sqs2HeaderFilterStrategy and the other sibling strategies. This is a defense-in-depth alignment with no known exploit path in camel-aws2-sns. This issue affects Apache Camel: from 4.0.0 before 4.14.8, from 4.15.0 before 4.18.3, from 4.19.0 before 4.21.0. This is a defense-in-depth hardening change with no known exploit path in camel-aws2-sns, which is producer-only, so no urgent action or workaround is required. Users who want the aligned behaviour can upgrade to version 4.21.0, or to 4.14.8 on the 4.14.x LTS releases stream, or to 4.18.3 on the 4.18.x releases stream, which contain the change. As a general best practice, operators should continue to apply least-privilege IAM permissions on their SNS topics.

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输入验证不恰当

Apache Camel 输入验证错误漏洞

Apache camel是美国Apache基金会开源的一个企业集成模式框架。 Apache Camel存在输入验证错误漏洞，该漏洞源于输入验证不当，即camel-aws2-sns组件通过Sns2HeaderFilterStrategy过滤Camel标头时未配置入站过滤规则，可能导致未授权攻击者利用网络访问注入Camel控制标头。以下版本受到影响：4.0.0至4.14.8之前版本、4.15.0至4.18.3之前版本和4.19.0至4.21.0之前版本。

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