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CVE-2026-61843— FileRise: Unauthenticated File Overwrite Through Upload-Enabled Folder Shares

Quick assessment

Affected
error311 FileRise
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.

FileRise 是一款自托管的基于 Web 的文件管理器，支持多文件上传、编辑和批量操作。在版本 3.18.0 之前，FileRise 中启用上传功能的共享文件夹链接以及仅上传链接不会拒绝与已存在文件同名目标文件。未经身份验证的访问者，只要拥有有效的共享令牌和任意已配置的共享密码，即可上传与现有文件同名的文件，从而静默替换其内容，而原始上传者的元数据则保持不变。同一替换漏洞同样影响通过 /api/upload/upload.php 进行的普通认证上传，以及缺乏对已有文件编辑权限的仅上传认证用户。该问题已在 3.1

CVSS 8.2 · High EPSS 0.31% · P22

Possible ATT&CK Techniques 1 AI

T1565.001 · Stored Data Manipulation

Affected Version Matrix 1

VendorProduct Version RangeStatus
error311 FileRise < 3.18.0 affected
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I. Basic Information for CVE-2026-61843

Vulnerability Information
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Vulnerability Title
FileRise: Unauthenticated File Overwrite Through Upload-Enabled Folder Shares
Source: CVE Program / CVE List V5
Vulnerability Description
FileRise is a self-hosted web-based file manager with multi-file upload, editing, and batch operations. Prior to 3.18.0, FileRise upload-enabled shared-folder and upload-only links do not reject a destination filename that already exists. An unauthenticated visitor with a valid share token and any configured share password can upload a file with the same name as an existing file and silently replace its content while the original uploader metadata remains. The same replacement gap affects ordinary authenticated uploads through /api/upload/upload.php and authenticated upload-only users who lack edit authority over the existing file. This issue is fixed in version 3.18.0.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制缺失
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
error311 FileRise < 3.18.0 -

II. Public POCs for CVE-2026-61843

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III. Intelligence Information for CVE-2026-61843

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Other References for CVE-2026-61843 (2)

Same Patch Batch · error311 · 2026-10-14 · 22 CVEs total

CVE-2026-57489 8.1 HIGH FileRise: AUTH_BYPASS reverse-proxy header trust without source IP validation enables full
CVE-2026-57490 8.1 HIGH FileRise: WebDAV authentication bypasses TOTP/MFA entirely
CVE-2026-104108 8.1 HIGH FileRise OIDC login can bind an attacker identity to an existing local account
CVE-2026-103977 8.1 HIGH FileRise: Session-scoped TOTP rate limiting permits repeated verification attempts
CVE-2026-57492 7.4 HIGH FileRise: Setup mode re-activates when users.txt becomes empty, allowing unauthenticated a
CVE-2026-61844 7.1 HIGH FileRise: Folder Metadata Filename Collisions Bypass "read_own" Isolation
CVE-2026-104109 6.8 MEDIUM FileRise: Authenticated ZIP extraction follows a pre-existing symlink and deletes files ou
CVE-2026-57493 6.8 MEDIUM FileRise: Remember-me auto-login uses stale admin role from token instead of current role
CVE-2026-104107 6.5 MEDIUM FileRise: Authenticated path traversal escapes configured storage root through inherited A
CVE-2026-104106 6.5 MEDIUM FileRise: 2FA disable and TOTP enrollment lack step-up re-authentication; enrollment activ
CVE-2026-57491 6.5 MEDIUM FileRise: ZIP extraction writes blocked file extensions to disk, bypassing the upload bloc
CVE-2026-69193 6.5 MEDIUM FileRise: Rate Limiting Bypass via Username Rotation Enables Unlimited Password Spraying
CVE-2026-104105 6.4 MEDIUM FileRise: TOTP codes are not single-use — valid 6-digit code can be replayed within its wi
CVE-2026-77427 5.9 MEDIUM FileRise: Insecure default cryptographic key fallback in manual installs
CVE-2026-103988 5.4 MEDIUM FileRise renameFolder omits destination-parent authorization
CVE-2026-69191 5.4 MEDIUM FileRise: Login Method Restriction Bypass via Direct API Access
CVE-2026-62664 5.4 MEDIUM FileRise: Authenticated path traversal in createFolder allows arbitrary directory creation
CVE-2026-104110 5.3 MEDIUM FileRise: Unauthenticated disclosure of internal folder path, client email, and upload pol
CVE-2026-69194 4.8 MEDIUM FileRise: Unsanitized footerHtml in Public Site Config
CVE-2026-55498 4.8 MEDIUM FileRise Shared Folder Symlink Escape

Showing top 20 of 22 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: FileRise
Same vendor: error311
Same weakness: CWE-862

V. Comments for CVE-2026-61843

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