{"document":{"category":"csaf_vex","csaf_version":"2.0","title":"CVE-2026-55667: File Browser: Out-of-scope file deletion by a Create-only scoped user via symlink-following RemoveAll in upload failure-cleanup","publisher":{"category":"vendor","name":"HarborGuard Database","namespace":"https://database.harborguard.co"},"tracking":{"id":"CVE-2026-55667","status":"final","version":"1","initial_release_date":"2026-06-25T17:32:32.151Z","current_release_date":"2026-06-25T17:32:32.151Z","revision_history":[{"date":"2026-06-25T17:32:32.151Z","number":"1","summary":"Initial machine-readable export from HarborGuard."}]},"distribution":{"tlp":{"label":"WHITE"},"text":"Public CVE data; freely redistributable."},"notes":[{"category":"description","text":"File Browser is a file managing interface for uploading, deleting, previewing, renaming, and editing files within a specified directory. Prior to 2.63.16, a scoped, non-admin File Browser user holding only the Create permission can delete arbitrary files outside their scope (other tenants' data, and the application's own database) via the upload failure-cleanup path. ScopedFs.RemoveAll is the one dereferencing operation that skips the symlink guard every other method enforces. The direct-upload handler runs RemoveAll on the user-controlled path during failed-upload cleanup, gated only by Perm.Create. If an escaping directory symlink already exists inside the user's scope, an authenticated create-only user can delete an out-of-scope target, bypassing both the ScopedFs boundary and the Perm.Delete gate. This vulnerability is fixed in 2.63.16.","title":"CVE description"}],"references":[{"category":"self","summary":"CVE-2026-55667 on HarborGuard Database","url":"https://database.harborguard.co/cve/CVE-2026-55667"},{"category":"external","summary":"CVE Record","url":"https://www.cve.org/CVERecord?id=CVE-2026-55667"},{"category":"external","summary":"https://github.com/filebrowser/filebrowser/security/advisories/GHSA-fmm7-x4gx-8jhr","url":"https://github.com/filebrowser/filebrowser/security/advisories/GHSA-fmm7-x4gx-8jhr"}]},"product_tree":{"branches":[{"category":"vendor","name":"filebrowser","branches":[{"category":"product_name","name":"filebrowser","branches":[{"category":"product_version","name":"< 2.63.16","product":{"name":"filebrowser filebrowser < 2.63.16","product_id":"CSAFPID-1","product_identification_helper":{"cpe":"cpe:2.3:a:filebrowser:filebrowser:\\<_2.63.16:*:*:*:*:*:*:*"}}}]}]}]},"vulnerabilities":[{"cve":"CVE-2026-55667","title":"File Browser: Out-of-scope file deletion by a Create-only scoped user via symlink-following RemoveAll in upload failure-cleanup","notes":[{"category":"description","text":"File Browser is a file managing interface for uploading, deleting, previewing, renaming, and editing files within a specified directory. Prior to 2.63.16, a scoped, non-admin File Browser user holding only the Create permission can delete arbitrary files outside their scope (other tenants' data, and the application's own database) via the upload failure-cleanup path. ScopedFs.RemoveAll is the one dereferencing operation that skips the symlink guard every other method enforces. The direct-upload handler runs RemoveAll on the user-controlled path during failed-upload cleanup, gated only by Perm.Create. If an escaping directory symlink already exists inside the user's scope, an authenticated create-only user can delete an out-of-scope target, bypassing both the ScopedFs boundary and the Perm.Delete gate. This vulnerability is fixed in 2.63.16.","title":"CVE description"}],"product_status":{"known_affected":["CSAFPID-1"]},"scores":[{"cvss_v3":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:N/I:H/A:H","baseScore":8.2,"baseSeverity":"HIGH"},"products":["CSAFPID-1"]}],"remediations":[{"category":"none_available","details":"No fixed version is published yet. Monitor the upstream advisory.","product_ids":["CSAFPID-1"]}]}]}