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CVE-2026-64856— FileRise: Missing Authentication Guard on File Snippet Preview Endpoint

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 是一个自托管的基于 Web 的文件管理器，支持多文件上传、文件编辑和批量操作。在 3.20.0 版本之前，FileRise 的 接口在处理短文本预览请求时，未应用标准的认证会话守卫（authenticated-session guard）。尽管该端点仍会执行 FileRise 的访问控制列表（ACL）检查，因此在正常安装配置下不会导致未授权的任意文件读取漏洞，但未经身份验证的请求仍可绕过直接的 401 未授权响应，进入 ACL 评估流程。仅在存在额外的非常规代理头设置或 ACL 配置错误等特殊情况

CVSS 3.7 · Low EPSS 0.23% · P13

Possible ATT&CK Techniques 1 AI

T1504

Affected Version Matrix 1

VendorProduct Version RangeStatus
error311 FileRise < 3.20.0 affected
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I. Basic Information for CVE-2026-64856

Vulnerability Information
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Vulnerability Title
FileRise: Missing Authentication Guard on File Snippet Preview Endpoint
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 3.20.0, FileRise /api/file/snippet.php does not apply the standard authenticated-session guard before processing short text preview requests. The endpoint still performs FileRise ACL checks, so normal installations do not expose an unauthenticated arbitrary file read, but unauthenticated requests can reach ACL evaluation instead of receiving an immediate 401 response. Only additional unusual proxy-header or ACL misconfiguration is documented as allowing requests to proceed into path and file-content handling. This issue is fixed in version 3.20.0.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
信息暴露
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
error311 FileRise < 3.20.0 -

II. Public POCs for CVE-2026-64856

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III. Intelligence Information for CVE-2026-64856

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Patches & Fixes for CVE-2026-64856 (1)

Other References for CVE-2026-64856 (2)

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

CVE-2026-61843 8.2 HIGH FileRise: Unauthenticated File Overwrite Through Upload-Enabled Folder Shares
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-2026-103977 8.1 HIGH FileRise: Session-scoped TOTP rate limiting permits repeated verification attempts
CVE-2026-104108 8.1 HIGH FileRise OIDC login can bind an attacker identity to an existing local account
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

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

IV. Related Vulnerabilities

Same product: FileRise
Same vendor: error311
Same weakness: CWE-200

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