CVE Watch13 jul 2026

CVE-2026-55187

Mailpit is an email testing tool and API for developers. Prior to 1.30.2, the remediation shipped for CVE-2026-27808 is incomplete because t

CVSS

5.8

Medio

EPSS

0.3%

p20

KEV

—

Exploit Today

0-100

Publicado: 10 jul 2026 · Última mod.: 13 jul 2026 · CWE-918

EPSS · 30d

0.3%EPSS · 30 días0.3%

2026-07-112026-07-21

Descripción técnica

Mailpit is an email testing tool and API for developers. Prior to 1.30.2, the remediation shipped for CVE-2026-27808 is incomplete because the tools.IsInternalIP deny-list in internal/tools/net.go relies on Go's standard library classification helpers and does not block IPv6 transition mechanisms or prefixes such as NAT64, 6to4, IPv4-compatible IPv6, ISATAP, fec0::/10, and 2001:db8::/32. An attacker who can deliver email and invoke POST /api/v1/message/{ID}/link-check can coerce the Link Check API's safeDialContext path into dialing internal destinations and can use status-code and error feedback to map internal service reachability, including cloud metadata endpoints. This issue is fixed in version 1.30.2.

Referencias oficiales

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