{"id":"CVE-2026-54720","summary":"Silverstripe Framework: Possible XSS attack through media embed","details":"Silverstripe Framework is a PHP framework which powers the Silverstripe CMS. In versions prior to 6.2.2, the \"Insert media from web\" functionality in the CMS is vulnerable to XSS from a specially crafted embed. This issue was fixed in version 6.2.2/","aliases":["GHSA-gvrw-qqp5-jgc5"],"modified":"2026-08-12T03:51:21.831570058Z","published":"2026-07-01T21:02:59.522Z","database_specific":{"cwe_ids":["CWE-79"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/54xxx/CVE-2026-54720.json","cna_assigner":"GitHub_M"},"references":[{"type":"WEB","url":"https://www.silverstripe.org/download/security-releases/cve-2026-54720"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/54xxx/CVE-2026-54720.json"},{"type":"ADVISORY","url":"https://github.com/silverstripe/silverstripe-framework/security/advisories/GHSA-gvrw-qqp5-jgc5"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-54720"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/silverstripe/silverstripe-framework","events":[{"introduced":"0"},{"fixed":"1bcb02adfc365c6436dc26ab2f6dd32d97f3979b"}],"database_specific":{"source":"AFFECTED_FIELD","extracted_events":[{"introduced":"0"},{"fixed":"6.2.2"}]}}],"versions":["6.2.1","6.2.0-rc1","6.2.0","6.2.0-beta1","6.1.0-beta1","6.0.0-alpha1","5.1.0-beta1","5.0.0-beta1","5.0.0-alpha1","4.9.0-beta1","4.9.0-alpha1","4.8.0-beta1","4.7.0-beta1","4.6.0-beta1","4.1.0-rc1","4.0.0-beta3","4.0.0-beta2","4.0.0-beta1","4.0.0-alpha7","4.0.0-alpha6","4.0.0-alpha4","4.0.0-alpha3","4.0.0-alpha2","4.0.0-alpha1","3.0.0-rc1","3.0.0-beta3","3.0.0-beta2","3.0.0-beta1","3.0.0-alpha2","3.0.0-alpha1","2.2.2-rc1","2.3.0-rc1","2.2.0-rc1"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-54720.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N"}]}