Unsanitized footer HTML exposed by FileRise public site config
Key facts
- Attack vector
- Network
- Privileges required
- High
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Cross-site scripting
- Confidentiality · integrity · availability
- Low · Low · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-79.
Summary
FileRise before 3.21.0 returns the stored branding footer HTML through its unauthenticated public site configuration API without server-side sanitization, a cross-site scripting weakness (CWE-79). The frontend sanitizes the value before rendering it, but the raw HTML is still exposed to API clients, which could be unsafe for alternate clients or future render paths. An administrator must first store the malicious footer value, and then a remote attacker with no login can read it through the API.
Written with Claude Haiku 5.5 from the sources below · 2026-10-28
Description from the CNA
FileRise is a self-hosted web-based file manager with multi-file upload, editing, and batch operations. Prior to 3.21.0, FileRise returns the stored branding.footerHtml value through the unauthenticated public site configuration API without server-side sanitization. The FileRise frontend already sanitizes this value before rendering it into the page, using an allowlist of simple footer tags and safe link handling. The unauthenticated public config API exposed raw admin-provided footer HTML to clients, which is still undesirable and could be unsafe for alternate clients or future render paths. An administrator must first store the malicious footer value. This issue is fixed in version 3.21.0.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
Upgrade to FileRise 3.21.0, which fixes this issue.
Written with Claude Haiku 5.5 from the sources below · 2026-10-28
- Fix · CNA FileRise (error311) Fixed in 3.21.0
Timeline
- 2026-10-15 Threatist record created from CVE-2026-69194
- 2026-10-16 CISA SSVC decision points changed
- 2026-10-16 Priority changed: LOW → MEDIUM
References
More error311 vulnerabilities
- TI-2026-74499 Unauthenticated file overwrite in FileRise via upload-enabled shares CVSS 3.1HIGH 8.2
- TI-2026-25514 FileRise: Default Encryption Key Enables Token Forgery and Config Decryption CVSS 3.1HIGH 8.2
- TI-2025-41705 FileRise vulnerable to Cross-Site Scripting (XSS) in SVG File Handling CVSS 3.1HIGH 8.9
- TI-2026-25513 FileRise: WebDAV upload path bypasses filename validation enforced by regular uploads CVSS 3.1HIGH 8.8
- TI-2026-74495 WebDAV authentication in FileRise skips TOTP two-factor check CVSS 3.1HIGH 8.1
- TI-2026-74494 Authentication bypass in FileRise via spoofed reverse-proxy headers CVSS 3.1HIGH 8.1
Sources
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences