{"document":{"category":"csaf_vex","csaf_version":"2.0","title":"CVE-2026-54097: File Browser: Cross-user unauthorized share-link deletion via unbounded prefix match in DeleteWithPathPrefix","publisher":{"category":"vendor","name":"HarborGuard Database","namespace":"https://database.harborguard.co"},"tracking":{"id":"CVE-2026-54097","status":"final","version":"1","initial_release_date":"2026-06-25T17:40:18.235Z","current_release_date":"2026-06-25T18:58:50.709Z","revision_history":[{"date":"2026-06-25T17:40:18.235Z","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 2.63.6, a low-privileged authenticated user of filebrowser (with create + delete permissions in their own isolated scope) can silently destroy share-link records belonging to any other user — including the administrator — by performing a legitimate DELETE on a file in their own directory whose logical path happens to be a byte-prefix of another user's stored share.Link.Path. The file contents of the victim are not exposed, but the victim's share links are irrevocably wiped. This vulnerability is fixed in 2.63.6.","title":"CVE description"}],"references":[{"category":"self","summary":"CVE-2026-54097 on HarborGuard Database","url":"https://database.harborguard.co/cve/CVE-2026-54097"},{"category":"external","summary":"CVE Record","url":"https://www.cve.org/CVERecord?id=CVE-2026-54097"},{"category":"external","summary":"https://github.com/filebrowser/filebrowser/security/advisories/GHSA-5ww9-jg6q-38r7","url":"https://github.com/filebrowser/filebrowser/security/advisories/GHSA-5ww9-jg6q-38r7"},{"category":"external","summary":"https://github.com/filebrowser/filebrowser/commit/0231b7ebdfbe77a6c54027d30c4856c3fd81ee4d","url":"https://github.com/filebrowser/filebrowser/commit/0231b7ebdfbe77a6c54027d30c4856c3fd81ee4d"},{"category":"external","summary":"https://github.com/filebrowser/filebrowser/releases/tag/v2.63.6","url":"https://github.com/filebrowser/filebrowser/releases/tag/v2.63.6"}]},"product_tree":{"branches":[{"category":"vendor","name":"filebrowser","branches":[{"category":"product_name","name":"filebrowser","branches":[{"category":"product_version","name":"< 2.63.6","product":{"name":"filebrowser filebrowser < 2.63.6","product_id":"CSAFPID-1","product_identification_helper":{"cpe":"cpe:2.3:a:filebrowser:filebrowser:\\<_2.63.6:*:*:*:*:*:*:*"}}}]}]}]},"vulnerabilities":[{"cve":"CVE-2026-54097","title":"File Browser: Cross-user unauthorized share-link deletion via unbounded prefix match in DeleteWithPathPrefix","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 2.63.6, a low-privileged authenticated user of filebrowser (with create + delete permissions in their own isolated scope) can silently destroy share-link records belonging to any other user — including the administrator — by performing a legitimate DELETE on a file in their own directory whose logical path happens to be a byte-prefix of another user's stored share.Link.Path. The file contents of the victim are not exposed, but the victim's share links are irrevocably wiped. This vulnerability is fixed in 2.63.6.","title":"CVE description"}],"product_status":{"known_affected":["CSAFPID-1"]},"scores":[{"cvss_v4":{"version":"4.0","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N","baseScore":7.2,"baseSeverity":"HIGH"},"products":["CSAFPID-1"]}],"remediations":[{"category":"none_available","details":"No fixed version is published yet. Monitor the upstream advisory.","product_ids":["CSAFPID-1"]}]}]}