{"id":"CVE-2026-72574","summary":"picocms Pico - Host Header Injection Enables Script Source Hijacking","details":"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.","modified":"2026-09-05T03:31:09.643728949Z","published":"2026-08-10T10:40:57.868Z","database_specific":{"cwe_ids":["CWE-644"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/72xxx/CVE-2026-72574.json","cna_assigner":"TuranSec"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/72xxx/CVE-2026-72574.json"},{"type":"ADVISORY","url":"https://github.com/picocms/Pico"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-72574"},{"type":"ADVISORY","url":"https://picocms.org"},{"type":"ARTICLE","url":"https://github.com/picocms/Pico/blob/master/lib/Pico.php"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/picocms/pico","events":[{"introduced":"0"},{"fixed":"7228129cade3f812f22904b503c939b04a75c9dd"}],"database_specific":{"source":["AFFECTED_FIELD","DESCRIPTION"],"extracted_events":[{"introduced":"0"},{"last_affected":"2.1.4"},{"fixed":"2.1.4"}]}}],"versions":["v2.1.3","v2.1.2","v2.1.1","v2.0.5-beta.1","v2.0.4","v2.0.3","v2.0.2","v2.0.1","v2.0.0","v1.0.6","v1.0.5","v1.0.4","v1.0.3","v1.0.2","v1.0.1","v1.0.0","v1.0.0-beta.2","v1.0.0-beta.1","v0.9","0.8","0.7","v0.6.2","v0.6.1","v0.6","v0.5","v0.4.1","v0.4","v0.3"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-72574.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N"}]}