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CVE-2026-53591

HIGH · CVSS 8.6 Public Exploit

Kaynak: NVD + CISA KEV + EPSS · Yayınlanma: 2026-07-20T20:16:44.613 · Çekilme zamanı: 2026-07-21T06:06:29.484286+00:00

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Detaylı analiz gerekiyor.

Public Exploit Sinyali

Bu CVE için açıklama veya referanslarda public exploit / PoC / GitHub / Metasploit sinyali tespit edildi.

GitHub PoC Linkleri

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CVE
CVE-2026-53591
Severity
HIGH
CVSS
8.6
EPSS
Yok

Orijinal NVD Açıklaması

FreeScout is a free help desk and shared inbox built with PHP's Laravel framework. Prior to version 1.8.223, an unauthenticated attacker can inject messages into any existing support conversation by sending a single email to the helpdesk's public address with a crafted `In-Reply-To` header. No credentials, tokens, or prior access are required. The injected message is rendered in the agent UI as a legitimate customer reply, the conversation is automatically reopened, and the `last_reply_from` field is set to the attacker's identity. Version 1.8.223 contains a fix.