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Mallory
Medium

Apache Camel camel-undertow message header injection bypass

IdentifiersCVE-2025-30177CWE-20

Apache Camel's camel-undertow component contains a message header injection / bypass vulnerability caused by its custom header filter strategy only filtering Camel-specific headers in the outbound direction and not in the inbound direction. In affected versions, attacker-controlled inbound requests processed by camel-undertow can supply Camel-specific headers that are not stripped before being mapped into the Camel Exchange. Those injected headers can then influence downstream Camel components, including components such as camel-bean or camel-exec, altering route behavior under particular conditions.

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ANALYST BRIEF

Impact, mitigation & remediation

What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.

Impact

What an attacker gets, and what they’ve been doing with it.

Successful exploitation allows an attacker to inject Camel-specific message headers into application flows that use the camel-undertow component. Depending on the downstream route design and components in use, this can bypass intended header-based security controls and alter application behavior. In deployments that pass messages to sensitive downstream components such as camel-bean or camel-exec, the injected headers may enable more serious outcomes, potentially including unintended method invocation or command-execution-related behavior.

Mitigation

If you can’t patch tonight, do this now.

The advisory-provided mitigation is to upgrade to a fixed version. No separate temporary workaround is described in the provided content. Where immediate upgrade is not possible, reducing exposure of camel-undertow endpoints to untrusted input and preventing downstream components from acting on attacker-controlled Camel headers may reduce risk, but this is not stated as an official mitigation in the provided material.

Remediation

Patch, then assume compromise.

Upgrade Apache Camel to a fixed release: 4.10.3 for the 4.10.x LTS branch or 4.8.6 for the 4.8.x LTS branch. Specifically, affected versions are Apache Camel 4.10.0 before 4.10.3 and 4.8.0 before 4.8.6.
PUBLIC EXPLOITS

Exploits

No public exploits tracked yet. Mallory keeps watching.

VALID 0 / 0 TOTALView more in app

No public exploit code observed for this vulnerability.

EXPOSURE SURFACE

Affected products & vendors

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VendorProductType
Apache Software FoundationCamelapplication

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What this page doesn’t show

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Exposure mapping

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Threat actor evidence

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Associated malware

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Detection signatures

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Vendor-by-vendor mapping

Cross-references every affected SKU, including bundled OEM variants.

Social activity2

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