What is CVE-2026-33454?

CVE-2026-33454 is a critical-severity vulnerability in Apache Camel, classified under Deserialization of Untrusted Data. CVSS score: 9.4/10. Published 2026-04-27.

How severe is CVE-2026-33454?

Critical severity. CVSS v3 base score is 9.4 out of 10.

Deserialization in Apache Camel

CVE-2026-33454

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 con…

Vulnerability class: Insecure Deserialization

EPSS: 0.003 (55.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.4 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L.

Affected products

Apache Camel
Apache Software Foundation Camel — versions 3.0.0, 4.15.0

Weakness classification (CWE)

CWE-502 — Deserialization of Untrusted Data

References

security@apache.org (vendor-advisory, Vendor Advisory)

Frequently asked questions

What is CVE-2026-33454?: CVE-2026-33454 is a critical-severity vulnerability in Apache Camel, classified under Deserialization of Untrusted Data. CVSS score: 9.4/10. Published 2026-04-27.
How severe is CVE-2026-33454?: Critical severity. CVSS v3 base score is 9.4 out of 10.