Is CVE-2026-44542 actively exploited?

No active exploitation of CVE-2026-44542 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-44542 be exploited remotely?

Yes. CVE-2026-44542 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-44542?

CVE-2026-44542 has a CVSS score of 9.1 (CRITICAL).

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CRITICAL

CVE-2026-44542

CWE-22Published: May 14, 2026· Updated: May 15, 2026

9.1

CVSS v3.1

EPSS:0.64%probability of exploitation in 30 daysPercentile:70.8th

Official Description

FileBrowser Quantum is a free, self-hosted, web-based file manager. Prior to 1.3.1-stable and 1.3.9-beta, attacker-controlled path input is joined with a trusted base path prior to sanitization, allowing traversal sequences (e.g., ../) to escape the intended shared directory. As a result, an unauthenticated attacker possessing a valid public share hash with delete permissions enabled can delete arbitrary files outside the shared directory within the share owner’s configured storage scope. This affects public/api/resources and public/api/resources/bulk. This vulnerability is fixed in 1.3.1-stable and 1.3.9-beta.

NVD Source

Technical Analysis

CVE-2026-44542 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 full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.1.