Is CVE-2026-54091 actively exploited?

No active exploitation of CVE-2026-54091 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-54091 be exploited remotely?

Yes. CVE-2026-54091 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-54091?

CVE-2026-54091 has a CVSS score of 7.5 (HIGH).

HOME VULNERABILITIESCVE-2026-54091

HIGH

CVE-2026-54091

CWE-863Published: June 25, 2026· Updated: Jun 26, 2026

7.5

CVSS v3.1

EPSS:0.47%probability of exploitation in 30 daysPercentile:37.3th

Official Description

File Browser is a file managing interface for uploading, deleting, previewing, renaming, and editing files within a specified directory. Prior to 2.63.6, File Browser's public share handlers rebase the share owner's filesystem root to the shared directory and then evaluate descendant paths against the owner's global and per-user rules using the rebased relative path instead of the original path relative to the owner's scope. As a result, an attacker who knows a public directory share URL can access files and subdirectories that the owner explicitly blocked with rules, as long as those blocked paths are located underneath the shared directory. In the simplest case this is an unauthenticated information disclosure through `GET /api/public/share/*` and `GET /api/public/dl/*`. This vulnerability is fixed in 2.63.6.

NVD Source

Technical Analysis

CVE-2026-54091 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), with a CVSS base score of 7.5.