VYPR
← All advisories
Moderate severityNVD Advisory· Published Mar 19, 2026· Updated Mar 21, 2026

File Browser has an Authorization Policy Bypass in its Public Share Download Flow

CVE-2026-32761

Description

File Browser is a file managing interface for uploading, deleting, previewing, renaming, and editing files within a specified directory. Versions 2.61.0 and below contain a permission enforcement bypass which allows users who are denied download privileges (perm.download = false) but granted share privileges (perm.share = true) to exfiltrate file content by creating public share links. While the direct raw download endpoint (/api/raw/) correctly enforces the download permission, the share creation endpoint only checks Perm.Share, and the public download handler (/api/public/dl/<hash>) serves file content without verifying that the original file owner has download permission. This means any authenticated user with share access can circumvent download restrictions by sharing a file and then retrieving it via the unauthenticated public download URL. The vulnerability undermines data-loss prevention and role-separation policies, as restricted users can publicly distribute files they are explicitly blocked from downloading directly. This issue has been fixed in version 2.62.0.

Affected packages

Versions sourced from the GitHub Security Advisory.

PackageAffected versionsPatched versions
https://github.com/filebrowser/filebrowserGo
<= 2.61.0—

Affected products

1

Patches

1
09a26166b4f7

fix: make perm.share depend on share.download

https://github.com/filebrowser/filebrowserHenrique DiasMar 14, 2026via ghsa
commit
2 files changed · +5 −2
  • frontend/src/views/files/FileListing.vue+4 −1 modified
    @@ -480,7 +480,10 @@ const headerButtons = computed(() => {
     shell: authStore.user?.perm.execute && enableExec,
     delete: fileStore.selectedCount > 0 && authStore.user?.perm.delete,
     rename: fileStore.selectedCount === 1 && authStore.user?.perm.rename,
-    share: fileStore.selectedCount === 1 && authStore.user?.perm.share,
+    share:
+      fileStore.selectedCount === 1 &&
+      authStore.user?.perm.share &&
+      authStore.user?.perm.download,
     move: fileStore.selectedCount > 0 && authStore.user?.perm.rename,
     copy: fileStore.selectedCount > 0 && authStore.user?.perm.create,
   };
  • http/share.go+1 −1 modified
    @@ -20,7 +20,7 @@ import (
 
 func withPermShare(fn handleFunc) handleFunc {
 	return withUser(func(w http.ResponseWriter, r *http.Request, d *data) (int, error) {
-		if !d.user.Perm.Share {
+		if !d.user.Perm.Share || !d.user.Perm.Download {
 			return http.StatusForbidden, nil
 		}

Vulnerability mechanics

Generated by null/stub on May 9, 2026. Inputs: CWE entries + fix-commit diffs from this CVE's patches. Citations validated against bundle.

References

5

News mentions

0

No linked articles in our index yet.