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CVE-2026-54092— File Browser: DoS Vulnerability on Public Login API

Quick assessment

Affected
filebrowser filebrowser
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

FileBrowser是filebrowser团队开源的一个文件管理界面，在指定的目录，它可以用来上传、删除、预览和编辑文件。 File Browser 2.63.6之前版本存在安全漏洞，该漏洞源于未检查密码最大长度，可能导致CPU和内存飙升，进而导致系统崩溃或严重延迟。

CVSS 6.5 · Medium EPSS 0.55% · P45

Possible ATT&CK Techniques 1 AI

T1496 · Resource Hijacking

Affected Version Matrix 1

VendorProduct Version RangeStatus
filebrowser filebrowser < 2.63.6 affected
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I. Basic Information for CVE-2026-54092

Vulnerability Information
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Vulnerability Title
File Browser: DoS Vulnerability on Public Login API
Source: CVE Program / CVE List V5
Vulnerability 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, unchecked passwords maximums allow for an arbitrarily large password to be passed into the login API. This spikes CPU and memory, and after testing, crashes, heavily lags any container created, and has even made my docker daemon start to send errors with status code 500 even after the container was destroyed. This vulnerability is fixed in 2.63.6.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
CWE-1284
Source: CVE Program / CVE List V5
Vulnerability Title
File Browser 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
FileBrowser是filebrowser团队开源的一个文件管理界面，在指定的目录，它可以用来上传、删除、预览和编辑文件。 File Browser 2.63.6之前版本存在安全漏洞，该漏洞源于未检查密码最大长度，可能导致CPU和内存飙升，进而导致系统崩溃或严重延迟。
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
filebrowser filebrowser < 2.63.6 -

II. Public POCs for CVE-2026-54092

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III. Intelligence Information for CVE-2026-54092

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Patches & Fixes for CVE-2026-54092 (1)

Vendor Advisories for CVE-2026-54092 (1)

Vendor Pages for CVE-2026-54092 (1)

Same Patch Batch · filebrowser · 2026-06-25 · 10 CVEs total

CVE-2026-54089 9.1 CRITICAL File Browser: Authentication Bypass via Proxy Auth Header Forgery
CVE-2026-54096 8.4 HIGH File Browser: Improper Access Control Occurs via Pre-Created Public Share for a Non-existe
CVE-2026-55667 8.2 HIGH File Browser: Out-of-scope file deletion by a Create-only scoped user via symlink-followin
CVE-2026-54094 7.5 HIGH File Browser: Symlink following lets scoped users read, overwrite, and share files outside
CVE-2026-54091 7.5 HIGH File Browser: Incorrect access control in public directory shares via rule path rebasing
CVE-2026-54090 File Browser: Command Allowlist Bypass via Shell Metacharacter Injection
CVE-2026-54088 File Browser: Command Injection via Authentication Hook Shell Substitution (Pre-Authentica
CVE-2026-54093 File Browser: Path traversal in download-as-zip/tar via Windows-style backslash separators
CVE-2026-54097 File Browser: Cross-user unauthorized share-link deletion via unbounded prefix match in De

IV. Related Vulnerabilities

Same product: filebrowser
Same vendor: filebrowser
Same weakness: CWE-1284