Is CVE-2026-84697 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-84697?

CVE-2026-84697 has a CVSS v3 severity of MEDIUM (5.3).

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CVE-2026-84697

Description

Mailpit's IsInternalIP deny list function fails to block the Azure WireServer address 168.63.129.16 and the RFC 2765/6145 IPv4-translated IPv6 prefix, allowing server-side request forgery to internal destinations. Attackers can supply hostnames resolving to these addresses in message content to reach the link check API and proxy endpoint for accessing internal resources.