WsgiDAV encoded dot segments can escape filesystem share roots (CVE-2026-48099) | HOL Guard CVE

High · CVSS 7.1CVE-2026-48099

WsgiDAV encoded dot segments can escape filesystem share roots

Answer in brief

CVE-2026-48099 records a High severity (CVSS 7.1) vulnerability in WsgiDAV encoded dot segments can escape filesystem share roots. The current sources do not mark it as known exploited. The current feed maps mar10/wsgidav (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 Aug 13, 2026Updated Sep 9, 2026Source checked Sep 27, 2026First seen by HOL Aug 13, 2026Material review Sep 9, 2026

Upstream Advisory

Key facts

Risk: High · CVSS 7.1
Exploitation: Not marked as known exploited
Affected software: 1 mapped package or product
Fix availability: Not reported

Why this deserves its current priority

CVSS is 7.1. 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 mar10/wsgidav (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
mar10/wsgidavgeneric	< 4.3.4	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for mar10/wsgidav.
Review the reported fix. Monitor this advisory for an available fix and review any installs of the affected package.

Evidence timeline and material changes

Published upstream
Aug 13, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Sep 9, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Aug 13, 2026

Sources and claim methodology

Upstream source description

WsgiDAV is a generic and extendable WebDAV server based on WSGI. WsgiDAV 4.3.3 and prior can allow a WebDAV request path containing an encoded parent-directory segment to escape the configured filesystem share root in a specific path layout. The issue is fixed with version 4.3.4.

Quoted source text, attributed separately from HOL analysis.