CVE-2026-26747

CRITICAL

9.1

Descricao

A Host Header Poisoning vulnerability exists in Monica 4.1.2 due to improper handling of the HTTP Host header in app/Providers/AppServiceProvider.php, combined with the default misconfiguration where the "app.force_url" is not set and default is "false". The application generates absolute URLs (such as those used in password reset emails) using the user-supplied Host header. This allows remote attackers to poison the password reset link sent to a victim,

Detalhes CVE

Pontuacao CVSS v3.19.1

SeveridadeCRITICAL

Vetor CVSSCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Vetor de ataqueNETWORK

ComplexidadeLOW

Privilegios necessariosNONE

Interacao do usuarioNONE

Publicado2/20/2026

Ultima modificacao2/26/2026

Fontenvd

Avistamentos honeypot0

Produtos afetados

monicahq:monica

Fraquezas (CWE)

CWE-644

Referencias

https://github.com/hungnqdz/cve-research/blob/main/CVE-2026-26747.md(cve@mitre.org)

https://github.com/monicahq/monica(cve@mitre.org)

Correlacoes IOC

Sem correlacoes registradas

This product uses data from the NVD API but is not endorsed or certified by the NVD.