FileRise < 3.28.0 Privilege Escalation via WebDAV Session Inheritance (CVE-2026-92616) | HOL Guard CVE

Unknown severity · Source severity not reportedCVE-2026-92616

FileRise < 3.28.0 Privilege Escalation via WebDAV Session Inheritance

Answer in brief

CVE-2026-92616 records a Unknown severity vulnerability in FileRise < 3.28.0 Privilege Escalation via WebDAV Session Inheritance. The current sources do not mark it as known exploited. The current feed maps error311/FileRise (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Sep 16, 2026Updated Sep 16, 2026Source checked Sep 16, 2026First seen by HOL Sep 16, 2026Material review Sep 16, 2026

Upstream Advisory

Key facts

Risk: Unknown severitySource severity not reported
Exploitation: Not marked as known exploited
Affected software: 1 mapped package or product
Fix availability: Available

Why this deserves its current priority

A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps error311/FileRise (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
error311/FileRisegeneric	>=0 <3.28.0	3.28.0

Recommended response

Check inventory. Check lockfiles and deployed manifests for error311/FileRise.
Review the reported fix. Update error311/FileRise to 3.28.0 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Sep 16, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Sep 16, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Sep 16, 2026

Sources and claim methodology

Upstream source 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.

Quoted source text, attributed separately from HOL analysis.