What’s Vulnerable › Vulnerabilities

CVE-2024-21742: Apache James Mime4J: Mime4J DOM header injection

• Severity: medium (CVSS 5.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2024-02-27 · updated 2026-06-17
• Weakness: CWE-74

Description

Improper input validation allows for header injection in MIME4J library when using MIME4J DOM for composing message. This can be exploited by an attacker to add unintended headers to MIME messages.

Affected products

• Apache James Mime4J: through 0.8.9

References

• https://lists.apache.org/thread/nrqzg93219wdj056pqfszsd33dc54kfy
• http://www.openwall.com/lists/oss-security/2024/02/27/5
• https://lists.apache.org/thread/nrqzg93219wdj056pqfszsd33dc54kfy

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