CVE-2026-55187

תיאור (מקור, אנגלית)

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.

מדדים

CVSS 3.1

5.8 (MEDIUM) מקור הציון: CNA CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N

EPSS — סבירות ניצול

0% (אחוזון 000) נכון ל-17/8/2026

CWE

CWE-918

קישורים

• https://github.com/axllent/mailpit/commit/a88dadbbe1df016a35a445089ef2a362a6c2‮…
• https://github.com/axllent/mailpit/releases/tag/v1.30.2
• https://github.com/axllent/mailpit/security/advisories/GHSA-w4mc-hhc6-xp28
• https://github.com/axllent/mailpit/security/advisories/GHSA-w4mc-hhc6-xp28