CVE-2026-72574 json
picocms Pico - Host Header Injection Enables Script Source Hijacking
published 2026-08-10 2 mo ago modified 2026-10-24 16 d ago also EUVD-2026-55232
- cvss
- 6.1
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.4%
- EPSS 0.4% chance of exploitation in 30 days, percentile 36%
- public exploits
- 0
- none known
Summary
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.
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 2 mo ago
Exploit prediction
0.42% chance of exploitation in the next 30 days, higher than 36% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 6.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |
Affected products
- picocms Pico
Classification
- Weakness
-
- CWE-644 Improper Neutralization of HTTP Headers for Scripting Syntax
References
-
picocms.org
third-party-advisory
-
github.com
/picocms/Pico
third-party-advisory
-
github.com
/picocms/Pico/blob/master/lib/Pico.php
technical-description
Sources
- CVE List CVE-2026-72574
- NVD CVE-2026-72574
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.