cvedb.io
CVE-2026-26747
CRITICAL · CVSS 9.1
EPSS exploitation probability: 0%
Published 2026-02-20T17:25:56.023 · Last modified 2026-06-17T10:26:19.603

Summary

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,

Affected products

monicahq — monica

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References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.