CVE-2026-72574 MEDIUM

CVE-2026-72574: picocms Pico - Host Header Injection Enables Script Source Hijacking

Vendor Picocms
Product Pico
Weakness CWE-644
Published August 10, 2026
Last update August 10, 2026
View on NVD All CVEs

CVSS base score

6.1/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction Required
Confidentiality Low
Integrity Low

CVSS vector

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

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

August 10, 2026 CVE published
August 10, 2026 Record updated