Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2026-72838— FileBrowser before 2.63.19 Disk Exhaustion via TUS Upload

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.

File Browser是File Browser组织的一款文件浏览管理软件。 File Browser 2.63.19之前版本存在资源管理错误漏洞，该漏洞源于TUS断点续传PATCH端点未强制执行声明的Upload-Length，可能允许经过身份验证的用户向磁盘写入任意数据，攻击者可通过发送超过声明上传长度的超大请求体耗尽可用磁盘空间，导致服务不可用。

CVSS 6.5 · Medium EPSS 0.53% · P43

Affected Version Matrix 2

VendorProduct Version RangeStatus
filebrowser filebrowser < 2.63.19 affected
2.63.19 unaffected
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-72838

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
FileBrowser before 2.63.19 Disk Exhaustion via TUS Upload
Source: CVE Program / CVE List V5
Vulnerability Description
FileBrowser versions before 2.63.19 fail to enforce the declared Upload-Length in the TUS resumable-upload PATCH endpoint, allowing authenticated users to write arbitrary data to disk. Attackers can send oversized request bodies that exceed the declared upload length to exhaust available disk space and cause service unavailability.
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
不加限制或调节的资源分配
Source: CVE Program / CVE List V5
Vulnerability Title
File Browser 资源管理错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
File Browser是File Browser组织的一款文件浏览管理软件。 File Browser 2.63.19之前版本存在资源管理错误漏洞，该漏洞源于TUS断点续传PATCH端点未强制执行声明的Upload-Length，可能允许经过身份验证的用户向磁盘写入任意数据，攻击者可通过发送超过声明上传长度的超大请求体耗尽可用磁盘空间，导致服务不可用。
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 0 ~ 2.63.19 -

II. Public POCs for CVE-2026-72838

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-72838

请登录查看更多情报信息。

Patches & Fixes for CVE-2026-72838 (1)

Vendor Advisories for CVE-2026-72838 (2)

Same Patch Batch · filebrowser · 2026-08-14 · 5 CVEs total

CVE-2026-72837 8.8 HIGH File Browser before 2.63.20 Privilege Escalation via Proxy Authentication
CVE-2026-72836 8.1 HIGH FileBrowser before 2.63.19 Case Sensitivity Authentication Bypass
CVE-2026-72835 6.8 MEDIUM filebrowser before v2.63.21 Access Rule Bypass via Path Canonicalization
CVE-2026-72834 4.3 MEDIUM filebrowser before 2.63.19 Permission Bypass via checksum

IV. Related Vulnerabilities

Same product: filebrowser
Same vendor: filebrowser
Same weakness: CWE-770

V. Comments for CVE-2026-72838

No comments yet

Leave a comment