CVE-2026-92616 Details
Description
FileRise before version 3.28.0 contains a privilege escalation vulnerability that allows authenticated low-privilege attackers to gain unauthorized read and write access by exploiting improper session isolation between the WebDAV interface and the web application session context. Attackers can combine valid Basic-Auth credentials with an active admin PHPSESSID cookie to bypass authorization boundaries, as the WebDAV layer incorrectly inherits elevated privileges from an ambient web session rather than enforcing independent stateless authentication per RFC 4918.
A privilege escalation vulnerability has been identified in FileRise versions prior to 3.28.0. This vulnerability allows authenticated low-privilege attackers to gain unauthorized read and write access by exploiting inadequate session isolation between the WebDAV interface and the web application session context. Attackers can leverage valid Basic Authentication credentials along with an active admin PHPSESSID cookie to bypass authorization boundaries. The WebDAV layer mistakenly inherits elevated privileges from the ambient web session instead of applying independent stateless authentication as required by RFC 4918.
Users can upgrade to FileRise version 3.28.0 or later to address this vulnerability.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Sep 16, 2026CISA-ADP
Assessed Sep 16, 2026References to Advisories, Solutions, and Tools
By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.
| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/error311/FileRise/releases/tag/v3.28.0 | [email protected] | Release NotesVendor |
| https://www.vulncheck.com/advisories/filerise-privilege-escalation-via-webdav-session-inheritance | [email protected] | AdvisoryRemedy |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-613 | Insufficient Session Expiration | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| FileRise | < 3.28.0 (semver) |
CPE
Remediation
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Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Sep 16, 2026 | CVE Modified | CISA-ADP |
| Sep 16, 2026 | New CVE Received | [email protected] |