{"affected":[{"defaultStatus":"unaffected","ecosystem":"github","packageName":"blossom-editor/blossom","product":"Blossom","source":"CNA: VulnCheck","vendor":"blossom-editor","versions":[{"lessThanOrEqual":"1.17.1","status":"affected","version":"0","versionType":"semver"}]}],"cveId":"CVE-2026-119659","cwes":["CWE-639"],"description":"Blossom through 1.17.1 contains an authorization bypass vulnerability that allows authenticated users to access other users' folders because FolderService queries filter only on folder id. Attackers can supply another user's folder id to /folder/info, /folder/upd, /folder/open or /folder/del to read storage paths, rename, toggle visibility, or delete folders.","epss":{"date":"2026-11-04","percentile":0.18249,"score":0.00263},"exploits":[],"kev":null,"metrics":[{"score":5.3,"severity":"medium","source":"CNA: VulnCheck","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N","version":"4.0"},{"score":5.4,"severity":"medium","source":"CNA: VulnCheck","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N","version":"3.1"},{"score":5.3,"severity":"medium","source":"NVD: disclosure@vulncheck.com","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/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","version":"4.0"},{"score":5.4,"severity":"medium","source":"NVD: disclosure@vulncheck.com","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N","version":"3.1"}],"modifiedAt":1793834241657,"publishedAt":1793369780531,"references":[{"source":"CNA: VulnCheck","tags":["issue-tracking"],"url":"https://github.com/blossom-editor/blossom/issues/213"},{"source":"CNA: VulnCheck","tags":["technical-description"],"url":"https://github.com/blossom-editor/blossom/blob/v1.17.1/blossom-backend/backend/src/main/java/com/blossom/backend/server/folder/FolderService.java#L123-L202"},{"source":"CNA: VulnCheck","tags":["technical-description"],"url":"https://github.com/blossom-editor/blossom/blob/v1.17.1/blossom-backend/backend/src/main/resources/mapper/FolderMapper.xml#L64-L92"},{"source":"CNA: VulnCheck","tags":["third-party-advisory"],"url":"https://hackmd.io/@hieuPenguinnn/blossom-folder-idor-cross-user-modify-delete"},{"source":"CNA: VulnCheck","tags":["product"],"url":"https://github.com/blossom-editor/blossom"},{"source":"CNA: VulnCheck","tags":["third-party-advisory"],"url":"https://www.vulncheck.com/advisories/blossom-through-1.17.1-authorization-bypass-via-folder-endpoints"},{"source":"disclosure@vulncheck.com","tags":[],"url":"https://github.com/blossom-editor/blossom"},{"source":"disclosure@vulncheck.com","tags":[],"url":"https://github.com/blossom-editor/blossom/blob/v1.17.1/blossom-backend/backend/src/main/java/com/blossom/backend/server/folder/FolderService.java#L123-L202"},{"source":"disclosure@vulncheck.com","tags":[],"url":"https://github.com/blossom-editor/blossom/blob/v1.17.1/blossom-backend/backend/src/main/resources/mapper/FolderMapper.xml#L64-L92"},{"source":"disclosure@vulncheck.com","tags":[],"url":"https://github.com/blossom-editor/blossom/issues/213"},{"source":"disclosure@vulncheck.com","tags":[],"url":"https://hackmd.io/@hieuPenguinnn/blossom-folder-idor-cross-user-modify-delete"},{"source":"disclosure@vulncheck.com","tags":[],"url":"https://www.vulncheck.com/advisories/blossom-through-1.17.1-authorization-bypass-via-folder-endpoints"}],"remediation":[],"revision":"f7ab50d86fe5bb4eef1c580dd942654f8f20d764765821735eae67249a6d1ec6","sources":[{"modifiedAt":1793831696679,"name":"CNA: VulnCheck","retrievedAt":1793833741972,"url":"https://www.cve.org/CVERecord?id=CVE-2026-119659"},{"modifiedAt":1793834241657,"name":"NVD","retrievedAt":1793838188790,"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-119659"},{"modifiedAt":null,"name":"FIRST EPSS","retrievedAt":1793833758924,"url":"https://api.first.org/data/v1/epss?cve=CVE-2026-119659"}],"ssvc":{"assessedAt":1793831685454,"automatable":"no","exploitation":"none","source":"ADP: CISA-ADP","technicalImpact":"partial"},"status":"published","title":"Blossom through 1.17.1 Authorization Bypass via Folder Endpoints","updatedAt":1793838188790}