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.
Metrics
Affected Vendors & Products
References
History
Mon, 10 Aug 2026 19:30:00 +0000
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ssvc
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Mon, 10 Aug 2026 12:00:00 +0000
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| 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. The resulting URL propagates to theme_url, assets_url, and plugins_url, causing script and stylesheet tags to load resources from an attacker-controlled domain. | 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. |
Mon, 10 Aug 2026 11:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| 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. The resulting URL propagates to theme_url, assets_url, and plugins_url, causing script and stylesheet tags to load resources from an attacker-controlled domain. | |
| Title | picocms Pico - Host Header Injection Enables Script Source Hijacking | |
| Weaknesses | CWE-644 | |
| References |
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| Metrics |
cvssV3_1
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Status: PUBLISHED
Assigner: TuranSec
Published:
Updated: 2026-08-10T18:22:51.259Z
Reserved: 2026-08-10T10:32:53.854Z
Link: CVE-2026-72574
Updated: 2026-08-10T15:52:51.823Z
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OpenCVE Enrichment
Updated: 2026-08-10T20:30:05Z