CVE-2026-72574

A host header injection vulnerability in picocms/Pico through 2.1.4 allows an unauthenticated remote attacker to control the origin of JavaScript and CSS assets loaded by the default theme. When base_url is unset (the default), Pico::getBaseUrl in lib/Pico.php builds the base URL from unvalidated Host, X-Forwarded-Host, X-Forwarded-Proto, and X-Forwarded-Port request headers.

CVSS v3 6.1 MEDIUM

6.1^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 2.7

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact NONE

Scope CHANGED

References

Link	Resource
https://github.com/picocms/Pico
https://github.com/picocms/Pico/blob/master/lib/Pico.php
https://picocms.org

Configurations

No configuration.

History

23 Oct 2026, 20:10

Type	Values Removed	Values Added
Summary		(es) Una vulnerabilidad de inyección de encabezado de host en picocms/Pico hasta la versión 2.1.4 permite a un atacante remoto no autenticado controlar el origen de los activos de JavaScript y CSS cargados por el tema predeterminado. Cuando base_url no está configurado (el valor predeterminado), Pico::getBaseUrl en lib/Pico.php construye la URL base a partir de los encabezados de solicitud no validados Host, X-Forwarded-Host, X-Forwarded-Proto y X-Forwarded-Port.

Information

Published : 2026-08-10 11:17

Updated : 2026-10-24 15:10

NVD link : CVE-2026-72574

Mitre link : CVE-2026-72574

CVE.ORG link : CVE-2026-72574

JSON object : View

Products Affected

No product.

CWE

CWE-644

Improper Neutralization of HTTP Headers for Scripting Syntax

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