CVE Catalog

CVE-2026-85314

MediumCVSS 6.5
Published: Translated: NVD NIST

Summary

An improper input validation vulnerability exists in the Apache Camel Mail component. The MimeMultipart data format retained an unfiltered path where unmarshalling a multipart message mapped mail.smtp headers onto the Exchange with no filter applied, so an external sender could set them and influence how a downstream mail producer connects and sends.

Risk Assessment

An external sender can influence the mail connection configuration, potentially leading to message redirection or leakage.

Recommendation

Upgrade Apache Camel to 4.23.0, 4.18.5 or 4.22.1; if immediate upgrade is not possible, strip the namespace with removeHeaders("mail.smtp*") before any mail producer.

Other vulnerabilities in Apache Camel

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Original NVD description (English source)

Improper Input Validation vulnerability in Apache Camel Mail component. This issue affects Apache Camel: from 4.0.0 before 4.18.5, from 4.19.0 before 4.22.1. CVE-2026-46584 addressed mail headers reaching the Exchange without passing through a header filter, but the MimeMultipart data format retained an unfiltered path: unmarshalling a multipart message mapped mail.smtp headers onto the Exchange with no filter applied. Those names sit outside the Camel namespace that consumer filters block, so a message crafted by an external sender could still set them, and the mail.smtp namespace influences how a downstream mail producer connects and sends. This is an incomplete fix of CVE-2026-46584 rather than a new class of defect: a deployment that applied that advisory and considered camel-mail settled remained exposed on this path. Upgrade to Apache Camel 4.23.0, which fixes the issue. Users on the 4.18.x LTS releases stream should upgrade to 4.18.5. Users on the 4.22.x LTS releases stream should upgrade to 4.22.1. The MimeMultipart data format now applies the header filter on unmarshal, closing the path CVE-2026-46584 left open. For deployments that cannot upgrade immediately, strip the namespace after the data format with removeHeaders("mail.smtp*") before any mail producer.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS