AUGUST 4, 2026
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Case File

CVE-2026-26747

CRITICAL · CVSS 9.1 EPSS 0.39% Public Exploit

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2026-02-20 · Last synced 2026-08-04

CyberRota Analysis

This is a critical severity vulnerability with a CVSS score of 9.1. Public exploit code or proof-of-concept references have been detected in its references. It may be remotely exploitable.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2026-26747
Severity
CRITICAL
CVSS
9.1
EPSS
0.39%

Original NVD Description

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,

Related CVEs

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