How broadly exploitable is this vulnerability?

Exploitability depends on how widely the FileBrowser Quantum interface is exposed. If the `/public/api/share/info` endpoint is reachable over the internet or a large internal network, an attacker with network access can attempt to query information about password-protected shares.

Does an attacker need the share password or an authenticated account?

In the vulnerable design, the attacker does not necessarily need the share password if the endpoint returns the tokenized `downloadURL` without verifying it. They only need network access and the ability to call the relevant public API endpoint.

What is the safest general fix pattern?

The safest approach is to enforce strict server-side authentication and authorization before returning any sensitive share metadata, especially download tokens or URLs. Password validation or equivalent authentication must occur before exposing any data that can be used to access the shared files.

Severity:

HIGH RISK

(7.5)

Information Exposure via Incomplete Authentication Checks (CWE-200) in FileBrowser Quantum Shared Links

CVE-2026-30933

Published:

Mar 10, 2026

Status:

Analyzed

Summary

Affected Context

Exploit Preconditions

Why This Happens

Potential Impact

General Mitigation Guidance

How Teams Detect Issues Like This

Frequently Asked Questions

Source

NDV

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Vulnerability Type

Category:

Information Exposure / Incomplete Authentication

CWE:

CWE-200;CWE-306;CWE-602

Impact:

Unauthorized Access to Protected File Shares

Severity:

HIGH RISK

(7.5)

CVSS Version:

3.1

Vulnerability Type

Category:

Information Exposure / Incomplete Authentication

CWE:

CWE-200;CWE-306;CWE-602

Impact:

Unauthorized Access to Protected File Shares

Severity:

HIGH RISK

(7.5)

CVSS Version:

3.1

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Information Exposure via Incomplete Authentication Checks (CWE-200) in FileBrowser Quantum Shared Links

Summary

Affected Context

Exploit Preconditions

Why This Happens

Potential Impact

General Mitigation Guidance

How Teams Detect Issues Like This

Frequently Asked Questions

Source

Recent Vulnerabilities

HIGH RISK

HIGH

(8.6)

Server-Side Request Forgery (CWE-918) in OpenClaw Zalo Plugin sendPhoto

HIGH RISK

HIGH

(8.8)

Authorization Bypass (CWE-863) in OpenClaw Matrix Room Control Commands

Vulnerability Type

Vulnerability Type

Vulnerability Type

Catch This CVE While Code Is Being Written

Ship clean & secure code faster

Ship clean & secure code faster

Ship clean & secure code faster

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