{"id":"BIT-ghost-2026-103276","summary":"Ghost before 6.20.0 File Read via URL Encoding Bypass","details":"Ghost versions before 6.20.0 contain a file extension filtering bypass vulnerability that allows unauthenticated attackers to read theme templates and metadata. Attackers can use URL encoding to bypass extension validation and access sensitive theme files.","aliases":["CVE-2026-103276","GHSA-6v8p-3jx9-8chr"],"modified":"2026-10-09T12:10:40.519596358Z","published":"2026-10-09T10:44:54.637Z","database_specific":{"severity":"Medium","cpes":["cpe:2.3:a:ghost:ghost:*:*:*:*:*:node.js:*:*"]},"references":[{"type":"WEB","url":"https://github.com/TryGhost/Ghost/security/advisories/GHSA-6v8p-3jx9-8chr"},{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-103276"},{"type":"WEB","url":"https://www.vulncheck.com/advisories/ghost-before-6.20.0-file-read-via-url-encoding-bypass"}],"affected":[{"package":{"name":"ghost","ecosystem":"Bitnami","purl":"pkg:bitnami/ghost"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"6.20.0"}]}],"database_specific":{"source":"https://github.com/bitnami/vulndb/tree/main/data/ghost/BIT-ghost-2026-103276.json"},"severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X"}]}],"schema_version":"1.9.0"}