ProductThird-party advisory
https://github.com/picocms/Pico CVE-2026-72574
MEDIUM
picocms Pico - Host Header Injection Enables Script Source Hijacking
Record summary
CVE-2026-72574 has a selected CVSS score of 6.1 (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.
Description source: CVE List
Exploitation context
CISA SSVC decision
ExploitationNone
AutomatableNo
Technical impactPartial
CISA Coordinator · SSVC 2.0.3 · Evaluated Aug 10, 2026 · Source: CVE List
Affected products and versions
1| Product | Source | Version range | Status |
|---|---|---|---|
Default status: unknown | CVE List | Through 2.1.4 | affected |
References
4Vulnerable FileTechnical description
https://github.com/picocms/Pico/blob/master/lib/Pico.php nvd.nist.gov
https://nvd.nist.gov/vuln/detail/CVE-2026-72574 VendorThird-party advisory
https://picocms.org/