Medium Severity

Open redirect: Mailtrack Korea

Description

Detects messages containing links to mailtrack.ksd.or.kr tracking service that redirect to external domains, potentially bypassing security controls through the legitimate Korean mail tracking infrastructure.

References

No references.

Sublime Security
Created Jun 4th, 2026 • Last updated Jun 4th, 2026
Source
type.inbound
and any(body.links,
        .href_url.domain.domain == "mailtrack.ksd.or.kr"
        and .href_url.path == "/TMS/tracking"
        and "url" in~ keys(.href_url.query_params_decoded)
        and not any(regex.iextract(.href_url.query_params,
                                   'url=([^&]+)(?:\&|\/|$)'
                    ),
                    strings.parse_url(.groups[0]).domain.root_domain == ..href_url.domain.root_domain
        )
)
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