All vulnerabilities
CVE-2026-33454GHSA-2vqf-x7g4-7c2g

org.apache.camel:camel-mail: Apache Camel's Camel-Mail component is vulnerable to Camel message header injection

Apache Software Foundation org.apache.camel:camel-mailmavenLibraries & packages
Open in ThreatlineRecord JSON
CVSS
9.4Critical
ExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)1.03%Chance of exploitation activity in the next 30 days, higher than 63% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed in4.14.6Also 4.18.1GitHub
Published27 Apr 2026Updated 5 Oct 2026CVE List

What fixes it

  • 4.14.6org.apache.camel:camel-mail, mavenGitHub<dependency><groupId>org.apache.camel</groupId><artifactId>camel-mail</artifactId><version>4.14.6</version></dependency>
  • 4.18.1org.apache.camel:camel-mail, mavenGitHub<dependency><groupId>org.apache.camel</groupId><artifactId>camel-mail</artifactId><version>4.18.1</version></dependency>
  • 4.14.6Apache CamelCVE List
  • 4.18.1Apache CamelCVE List
  • 4.14.6org.apache.camel:camel-mail, MavenOSV<dependency><groupId>org.apache.camel</groupId><artifactId>camel-mail</artifactId><version>4.14.6</version></dependency>
  • 4.18.1org.apache.camel:camel-mail, MavenOSV<dependency><groupId>org.apache.camel</groupId><artifactId>camel-mail</artifactId><version>4.18.1</version></dependency>

A fixed version on one release line is not the upgrade target for every line. Check your exact version and any vendor backports.

Description

The Camel-Mail component is vulnerable to Camel message header injection. The custom header filter strategy used by the component (MailHeaderFilterStrategy) only filters the 'out' direction via setOutFilterStartsWith, while it does not configure the 'in' direction via setInFilterStartsWith. As a result, when a Camel application consumes mail through camel-mail (for example via from(\"imap://...\") or from(\"pop3://...\")) the inbound filter check is skipped and Camel-prefixed MIME headers are mapped unfiltered into the Exchange. An attacker who can deliver an email to a mailbox monitored by such a consumer can inject Camel-specific headers that, for some Camel components downstream of the mail consumer (such as camel-bean, camel-exec, or camel-sql), can alter the behaviour of the route. This is the same pattern that was previously addressed in camel-undertow (CVE-2025-30177) and the broader incoming-header filter (CVE-2025-27636 and CVE-2025-29891).

This issue affects Apache Camel: from 3.0.0 before 4.14.6, from 4.15.0 before 4.18.1.

Users are recommended to upgrade to version 4.19.0, which fixes the issue. If users are on the 4.18.x LTS releases stream, then they are suggested to upgrade to 4.18.1. If users are on the 4.14.x LTS releases stream, then they are suggested to upgrade to 4.14.6.

Text from GitHub Advisory Database

Affected versions 60

  • org.apache.camel:camel-mail, maven>= 3.0.0, < 4.14.6GitHub
  • org.apache.camel:camel-mail, maven>= 4.15.0, < 4.18.1GitHub
  • Apache Camelaffected: 3.0.0 before 4.14.6CVE List
  • Apache Camelaffected: 4.15.0 before 4.18.1CVE List
  • org.apache.camel:camel-mail, Mavenfrom 3.0.0, fixed in 4.14.6OSV
  • org.apache.camel:camel-mail, Maven3.0.0OSV
  • org.apache.camel:camel-mail, Maven3.0.1OSV
  • org.apache.camel:camel-mail, Maven3.1.0OSV
  • org.apache.camel:camel-mail, Maven3.10.0OSV
  • org.apache.camel:camel-mail, Maven3.11.0OSV
  • org.apache.camel:camel-mail, Maven3.11.1OSV
  • org.apache.camel:camel-mail, Maven3.11.2OSV
  • org.apache.camel:camel-mail, Maven3.11.3OSV
  • org.apache.camel:camel-mail, Maven3.11.4OSV
  • org.apache.camel:camel-mail, Maven3.11.5OSV
  • org.apache.camel:camel-mail, Maven3.11.6OSV
  • org.apache.camel:camel-mail, Maven3.11.7OSV
  • org.apache.camel:camel-mail, Maven3.12.0OSV
  • org.apache.camel:camel-mail, Maven3.13.0OSV
  • org.apache.camel:camel-mail, Maven3.14.0OSV
  • org.apache.camel:camel-mail, Maven3.14.1OSV
  • org.apache.camel:camel-mail, Maven3.14.10OSV
  • org.apache.camel:camel-mail, Maven3.14.2OSV
  • org.apache.camel:camel-mail, Maven3.14.3OSV
  • org.apache.camel:camel-mail, Maven3.14.4OSV
  • org.apache.camel:camel-mail, Maven3.14.5OSV
  • org.apache.camel:camel-mail, Maven3.14.6OSV
  • org.apache.camel:camel-mail, Maven3.14.7OSV
  • org.apache.camel:camel-mail, Maven3.14.8OSV
  • org.apache.camel:camel-mail, Maven3.14.9OSV
  • org.apache.camel:camel-mail, Maven3.15.0OSV
  • org.apache.camel:camel-mail, Maven3.16.0OSV
  • org.apache.camel:camel-mail, Maven3.17.0OSV
  • org.apache.camel:camel-mail, Maven3.18.0OSV
  • org.apache.camel:camel-mail, Maven3.18.1OSV
  • org.apache.camel:camel-mail, Maven3.18.2OSV
  • org.apache.camel:camel-mail, Maven3.18.3OSV
  • org.apache.camel:camel-mail, Maven3.18.4OSV
  • org.apache.camel:camel-mail, Maven3.18.5OSV
  • org.apache.camel:camel-mail, Maven3.18.6OSV
  • org.apache.camel:camel-mail, Maven3.18.7OSV
  • org.apache.camel:camel-mail, Maven3.18.8OSV
  • org.apache.camel:camel-mail, Maven3.19.0OSV
  • org.apache.camel:camel-mail, Maven3.2.0OSV
  • org.apache.camel:camel-mail, Maven3.20.0OSV
  • org.apache.camel:camel-mail, Maven3.20.1OSV
  • org.apache.camel:camel-mail, Maven3.20.2OSV
  • org.apache.camel:camel-mail, Maven3.20.3OSV
  • org.apache.camel:camel-mail, Maven3.20.4OSV
  • org.apache.camel:camel-mail, Maven3.20.5OSV
  • org.apache.camel:camel-mail, Maven3.20.6OSV
  • org.apache.camel:camel-mail, Maven3.20.7OSV
  • org.apache.camel:camel-mail, Maven3.20.8OSV
  • org.apache.camel:camel-mail, Maven3.20.9OSV
  • org.apache.camel:camel-mail, Maven3.21.0OSV
  • org.apache.camel:camel-mail, Mavenfrom 4.15.0, fixed in 4.18.1OSV
  • org.apache.camel:camel-mail, Maven4.15.0OSV
  • org.apache.camel:camel-mail, Maven4.16.0OSV
  • org.apache.camel:camel-mail, Maven4.17.0OSV
  • org.apache.camel:camel-mail, Maven4.18.0OSV

References 22