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

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2026-82237— filebrowser through 2.63.23 Stale Share Link via File Rename

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 2.63.23及之前版本存在资源管理错误漏洞，该漏洞源于共享文件重命名时未删除共享记录，导致旧的公开共享链接在原始路径出现新文件时，可能意外暴露该新文件。

CVSS 3.1 · Low EPSS 0.21% · P11

Possible ATT&CK Techniques 1 AI

T1075

Affected Version Matrix 1

VendorProduct Version RangeStatus
filebrowser filebrowser ≤ 2.63.23 affected
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-82237

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Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.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 through 2.63.23 Stale Share Link via File Rename
Source: CVE Program / CVE List V5
Vulnerability Description
filebrowser through 2.63.23 does not remove share records when a shared file is renamed (only deletion triggers share cleanup). The share record is keyed by path, so it survives the rename and remains dormant (returning 404 while the path is empty). When any new, unrelated file later appears at the original shared path — via re-upload, another user with create permission, or a hook — the stale public share link serves that new file under the original link's password and expiry settings, unexpectedly exposing it.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
清理环节不完整
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 2.63.23及之前版本存在资源管理错误漏洞，该漏洞源于共享文件重命名时未删除共享记录，导致旧的公开共享链接在原始路径出现新文件时，可能意外暴露该新文件。
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 ~ 2.63.23 -

II. Public POCs for CVE-2026-82237

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

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-82237

请登录查看更多情报信息。

Vendor Advisories for CVE-2026-82237 (2)

Same Patch Batch · filebrowser · 2026-08-28 · 4 CVEs total

CVE-2026-82235 5.9 MEDIUM filebrowser through 2.63.23 Denial of Service via named pipes
CVE-2026-82238 3.1 LOW filebrowser 2.24.0 Race Condition via TUS concurrent PATCH uploads
CVE-2026-82236 3.1 LOW File Browser 2.63.6 through 2.63.23 Share Link Exposure via File Deletion

IV. Related Vulnerabilities

Same product: filebrowser
Same vendor: filebrowser
Same weakness: CWE-459

V. Comments for CVE-2026-82237

No comments yet

Leave a comment