{"cve":"CVE-2026-33454","nvd":{"published":"2026-04-27T10:16:07.853","modified":"2026-10-26T22:10:00.163","status":"Modified","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).\n\nThis issue affects Apache Camel: from 3.0.0 before 4.14.6, from 4.15.0 before 4.18.1.\n\nUsers 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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L","score":9.4},"cwes":["CWE-502","CWE-1173"],"references":["https://camel.apache.org/security/CVE-2026-33454.html","https://access.redhat.com/errata/RHSA-2026:17668","https://access.redhat.com/errata/RHSA-2026:19835","https://access.redhat.com/security/cve/CVE-2026-33454","https://bugzilla.redhat.com/show_bug.cgi?id=2463181"],"products":["apache:camel"],"source":"nvd","synced_at":"2026-10-26T22:26:44.656832877+00:00"},"epss":{"cve":"CVE-2026-33454","score":0.01492,"percentile":0.73954,"date":"2026-10-26"},"kev":null,"osv":[{"id":"GHSA-2vqf-x7g4-7c2g","url":"https://osv.dev/vulnerability/GHSA-2vqf-x7g4-7c2g","summary":"Apache Camel's Camel-Mail component is vulnerable to Camel message header injection","modified":"2026-10-05T18:45:06.049745177Z","packages":[{"ecosystem":"Maven","name":"org.apache.camel:camel-mail","purl":"pkg:maven/org.apache.camel/camel-mail","ranges":[">=3.0.0 <4.14.6"],"fixed":["4.14.6"]},{"ecosystem":"Maven","name":"org.apache.camel:camel-mail","purl":"pkg:maven/org.apache.camel/camel-mail","ranges":[">=4.15.0 <4.18.1"],"fixed":["4.18.1"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}