---
id: "CVE-2026-15198"
page: "https://infrastack.ai/live/CVE-2026-15198"
kind: "vulnerability"
aliases: ["CVE-2026-15198"]
title: "Synology DSM: missing authentication in WebDAV API exposes files"
severity: "medium"
cvss: 6.5
epss: null
exploited: false
status: "open"
category: "infrastructure"
products: []
ecosystems: []
tags: ["dsm", "infrastructure", "self-hosted", "synology", "webdav"]
not_affected_if: ["patched-dsm", "webdav-disabled"]
published_at: "2026-11-12T04:17:18+00:00"
first_seen_at: "2026-11-12T04:47:08+00:00"
updated_at: "2026-11-12T04:47:52+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-15198", "first_seen_at": "2026-11-12T04:47:08+00:00"}]
exploit_sources: []
---

# Synology DSM: missing authentication in WebDAV API exposes files

Link for people: https://infrastack.ai/live/CVE-2026-15198 (this .md is for agents)

Synology DiskStation Manager has a WebDAV API that performs a critical function without requiring authentication. A remote attacker can read specific files and cause limited denial of service.

_Summary, check and fix written by a model from the sources; labelled as such._

## How to check

- Check the DSM version in Control Panel > Info Center; `7.3.2-86009-5` or `7.4.1-90080-1` or later is not affected per the sources.
- Check whether WebDAV Server is enabled in Package Center or File Services.

## Fix

- DSM `7.3.2-86009-5` for the 7.3 branch
- DSM `7.4.1-90080-1` for the 7.4 branch

## Timeline

- 2026-11-12T04:47:08+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-15198

## From the sources

A missing authentication for critical functionality vulnerability in the Webdav API in Synology DiskStation Manager (DSM) before 7.3.2-86009-5 and 7.4.1-90080-1 allows remote attackers to read specific files and conduct limited denial-of-service attacks.

---

_Free to read, with fair use of about 60 pages a minute. For higher limits or API access: sales@infrastack.ai_