---
id: CVE-2026-109823
title: Host filesystem path disclosure via DNS rebinding
summary: >-
  An attacker can read the name of filesystem paths of your application present
  via Tidewave configuration via /tidewave/connect or via the rendered toolbar.


  Neither response checks the Host header. A web page that rebinds its own
  domain …
severity: low
cvss: 2.3
cvssVector: 'CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N'
cvssSource: cna
cwe:
  - CWE-497
vendor: tidewave-ai
product: tidewave
affected:
  - tidewave >= 0.8.0 < 0.9.2
  - >-
    tidewave-ai/tidewave_phoenix >= f78352b56d19cd4ae49999aa385011cef73e8b93 <
    80159536f752dc4d34797934d1516f29cea12b50
published: '2026-10-27'
updated: '2026-10-27'
sourceUpdated: '2026-10-27T15:47:36.862Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-109823'
references:
  - url: 'https://cna.erlef.org/cves/CVE-2026-109823.html'
    label: EEF CNA record for CVE-2026-109823
  - url: 'https://osv.dev/vulnerability/EEF-CVE-2026-109823'
    label: OSV record EEF-CVE-2026-109823
  - url: >-
      https://github.com/tidewave-ai/tidewave_phoenix/commit/f78352b56d19cd4ae49999aa385011cef73e8b93
    label: Introducing commit f78352b in tidewave-ai/tidewave_phoenix
  - url: >-
      https://github.com/tidewave-ai/tidewave_phoenix/commit/80159536f752dc4d34797934d1516f29cea12b50
    label: Fix commit 8015953 in tidewave-ai/tidewave_phoenix
tags:
  - cve.org
ingestedAt: '2026-10-27T16:11:59.473Z'
---

## Overview

An attacker can read the name of filesystem paths of your application present via Tidewave configuration via /tidewave/connect or via the rendered toolbar.

Neither response checks the Host header. A web page that rebinds its own domain to the loopback address can therefore read the tag with a same-origin request, which carries no Origin header. The paths usually reveal the local username and the project layout.

This issue affects tidewave: from 0.8.0 before 0.9.2.

## Affected

- `tidewave >= 0.8.0 < 0.9.2`
- `tidewave-ai/tidewave_phoenix >= f78352b56d19cd4ae49999aa385011cef73e8b93 < 80159536f752dc4d34797934d1516f29cea12b50`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.