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CVE-2026-26747

nvd nist
Published: Feb 20, 2026Modified: Jun 17, 2026

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9.1
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Exploitability: 3.9 / Impact: 5.2
Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0 (Secondary)

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,

Affected (1)

Products: Monicahq: Monica
Monicahq
1 product
Monica
Configuration A
1 vulnerable
Vulnerable SoftwareAffected Versions
Monica
Version 4.1.2

Related CWEs

CWE-644
Improper Neutralization of HTTP Headers for Scripting Syntax
The product does not neutralize or incorrectly neutralizes web scripting syntax in HTTP headers that can be used by web browser components that can process raw headers, such as Flash.

References (2)

Source: cve@mitre.org
ExploitVendor Advisory
Source: cve@mitre.org
Product

Timeline

No history available yet.