CVE-2026-26747

CVSS 9.1 CRITICALEPSS 0.4%CWE-644

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,

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

Produtos afetados

n/a · n/a

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Referências

https://github.com/hungnqdz/cve-research/blob/main/CVE-2026-26747.md https://github.com/monicahq/monica