PT-2026-61701 · Freescout Help Desk · Freescout

CVE-2026-53591 · Publicado 2026-07-20 · Atualizado 2026-07-20

NVD

CVSS v3.1

8.6

Alta

Vetor base

AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:L

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.

Exploit

Correção

Improper Authentication

Enumeração de Fraquezas

CWE-287

Identificadores relacionados

CVE-2026-53591

Produtos afetados

Freescout

Referências · 2

• 🔥 https://github.com/freescout-help-desk/freescout/security/advisories/GHSA-8vm3-wwq4-ggfx · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2026-53591 · Nota de Segurança