Medium 6.1Published Aug 10, 2026

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

Updated under an hour ago (2026-10-19 09:10 UTC)

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It affects picocms Pico. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for picocms Pico

Exploited in the last 30 days

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: 6.1 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Weakness (CWE): CWE-644
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: TuranSec
NVD analysis: Deferred
Record last updated: Aug 10, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

picocms Pico picocms:pico (from the name)	through 2.1.4	CNA record

References

https://picocms.orgthird-party-advisory
https://github.com/picocms/Picothird-party-advisory
https://github.com/picocms/Pico/blob/master/lib/Pico.phptechnical-description

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.