CVE-2026-57490: CWE-308: Use of Single-factor Authentication in error311 FileRise
Description
FileRise versions prior to 3.16.0 have a vulnerability in their WebDAV Basic authentication implementation where the second factor of authentication (TOTP) is not enforced. This allows an attacker with valid primary credentials to bypass two-factor authentication and access WebDAV file permissions. The issue is fixed in version 3.16.0.
CVSS v3.1
Score 8.1high
Affected software
error311
FileRise
Run on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
FileRise is a self-hosted web-based file manager. Before version 3.16.0, when WebDAV is enabled, the Basic authentication mechanism validates only the username and password via AuthModel::authenticate() and does not require the configured TOTP second factor. This means that accounts configured with TOTP can be accessed via WebDAV with only the primary credentials, bypassing the intended two-factor authentication. The browser login enforces TOTP correctly, but the separate public/webdav.php authentication callback does not. This vulnerability is tracked as CVE-2026-57490 and is fixed in version 3.16.0.
Potential Impact
An attacker who knows valid username and password credentials for a TOTP-enabled account can bypass the second factor and authenticate to the WebDAV service. This allows unauthorized access to the account's WebDAV file permissions, potentially leading to unauthorized file access or modification. The vulnerability does not affect the browser login path, which enforces TOTP correctly.
Mitigation Recommendations
Upgrade FileRise to version 3.16.0 or later, where this issue is fixed. Prior to upgrading, consider disabling WebDAV if possible to prevent exploitation. Patch status is confirmed fixed in 3.16.0.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-06-24T14:53:40.111Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6acfe7382cdf04f656ad192d
Added to database: 10/14/2026, 20:34:00 UTC
Last enriched: 10/14/2026, 20:48:18 UTC
Last updated: 10/14/2026, 20:49:11 UTC
Views: 8
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.