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CVE-2026-30933— FileBrowser Quantum Incomplete Remediation of CVE-2026-27611: Password-Protected Share Bypass via /public/api/share/info

Quick assessment

Affected
gtsteffaniak filebrowser
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

FileBrowser Quantum是Graham Steffaniak个人开发者的一个文件管理器。 FileBrowser Quantum 1.3.1-beta之前版本和1.2.2-stable之前版本存在安全漏洞，该漏洞源于密码保护共享仍通过/public/api/share/info泄露令牌化下载URL，可能导致信息泄露。

CVSS 7.5 · High EPSS 0.52% · P42

Possible ATT&CK Techniques 1 AI

T1530 · Data from Cloud Storage
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I. Basic Information for CVE-2026-30933

Vulnerability Information
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Vulnerability Title
FileBrowser Quantum Incomplete Remediation of CVE-2026-27611: Password-Protected Share Bypass via /public/api/share/info
Source: CVE Program / CVE List V5
Vulnerability Description
FileBrowser Quantum is a free, self-hosted, web-based file manager. Prior to 1.3.1-beta and 1.2.2-stable, the remediation for CVE-2026-27611 is incomplete. Password protected shares still disclose tokenized downloadURL via /public/api/share/info. This vulnerability is fixed in 1.3.1-beta and 1.2.2-stable.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
信息暴露
Source: CVE Program / CVE List V5
Vulnerability Title
FileBrowser Quantum 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
FileBrowser Quantum是Graham Steffaniak个人开发者的一个文件管理器。 FileBrowser Quantum 1.3.1-beta之前版本和1.2.2-stable之前版本存在安全漏洞，该漏洞源于密码保护共享仍通过/public/api/share/info泄露令牌化下载URL，可能导致信息泄露。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
gtsteffaniak filebrowser >= 1.3.0-beta, < 1.3.1-beta -

II. Public POCs for CVE-2026-30933

# POC Description Source Link Shenlong Link
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Qwen3.6-35B-A3B · 7803 chars
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III. Intelligence Information for CVE-2026-30933

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Vendor Advisories for CVE-2026-30933 (1)

Vendor Pages for CVE-2026-30933 (2)

IV. Related Vulnerabilities

Same product: filebrowser
Same vendor: gtsteffaniak
Same weakness: CWE-200

V. Comments for CVE-2026-30933

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