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Fencer Intel
medium 6.5

CVE-2026-85314 json

Apache Camel: Camel-Mail Header Injection via Unfiltered mail.smtp Headers in the MimeMultipart Data Format (Incomplete Fix of CVE-2026-46584)

published 23d ago modified 8d ago also EUVD-2026-104202

cvss
6.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.5%
EPSS 0.5% chance of exploitation in 30 days, percentile 46%
public exploits
0
none known

Summary

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.

Patch / fix

  • maven org.apache.camel:camel-mail 4.18.5, 4.22.1, 4.23.0
  • Apache Software Foundation Apache Camel 4.18.5, 4.22.1, 4.23.0

Is CVE-2026-85314 in your dependencies? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

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Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-85314 updated cvss 6.5

org.apache.camel/camel-mail: camel-mail: Email configuration manipulation via unfiltered multipart headers

  • Red Hat build of Apache Camel 4 for Quarkus 3 camel-mail 4.18.4.redhat-00007 Red Hat build of Apache Camel for Spring Boot 4 camel-mail 4.18.4.redhat-00007
    affected: no fix available “Fix deferred”
  • Red Hat Fuse 7 camel-mail 4.18.4.redhat-00007
    affected: no fix planned “Out of support scope”

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
yes
Technical impact
partial
Assessed
23d ago

Exploit prediction

0.55% chance of exploitation in the next 30 days, higher than 46% of all scored CVEs (FIRST EPSS, 2026-11-11).

CVSS scores

assigned by version score vector
CNA 3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

Affected packages

ecosystem package affected fixed in
maven org.apache.camel:camel-mail
>=4.0.0, <4.18.5
>=4.19.0, <4.22.1
4.18.5
4.22.1
4.23.0

Affected products

  • Apache Software Foundation Apache Camel

Classification

Weakness
  • CWE-20 Improper Input Validation

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.