What is CVE-2024-21742?

CVE-2024-21742 is a medium-severity vulnerability in Apache James Mime4j, classified under Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection). CVSS score: 5.3/10. Published 2024-02-27.

How severe is CVE-2024-21742?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Is CVE-2024-21742 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Vulnerability in Apache James Mime4j

CVE-2024-21742

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.

EPSS: 0.011 (62.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N.

Affected products

Apache James_mime4j
Apache Software Foundation James Mime4j — versions 0

Weakness classification (CWE)

CWE-74 — Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection)

Public proof-of-concept exploits

fkie-cad/nvd-json-data-feeds

References

security@apache.org (vendor-advisory, Mailing List, Vendor Advisory)
af854a3a-2127-422b-91ae-364da2661108 (Mailing List)

Frequently asked questions

What is CVE-2024-21742?: CVE-2024-21742 is a medium-severity vulnerability in Apache James Mime4j, classified under Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection). CVSS score: 5.3/10. Published 2024-02-27.
How severe is CVE-2024-21742?: Medium severity. CVSS v3 base score is 5.3 out of 10.
Is CVE-2024-21742 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.