CVE-2026-72574
Medium
Description
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.
SeverityMedium
CVSS6.1
Exploit probability—
Product
Pico
PublishedAug 10, 2026
First seenAug 10, 2026
Weakness typeCWE-644CWE-644
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| picocms Pico | v ≤ 2.1.4 | — |
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