---
id: CVE-2026-15542
title: A vulnerability has been found in will-moss Isaiah up to 1.36.9
summary: >-
  A vulnerability has been found in will-moss Isaiah up to 1.36.9. This affects
  an unknown function of the file app/main.go of the component Websocket
  Connection Authentication. The manipulation leads to improper authentication.
  The attack…
severity: high
cvss: 7.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L'
cwe:
  - CWE-287
published: '2026-07-13'
updated: '2026-07-13'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-15542'
references:
  - url: 'https://github.com/will-moss/isaiah/'
    label: cna@vuldb.com
  - url: 'https://github.com/will-moss/isaiah/issues/33'
    label: cna@vuldb.com
  - url: 'https://github.com/will-moss/isaiah/pull/36'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/cve/CVE-2026-15542'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/submit/855075'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/vuln/377892'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/vuln/377892/cti'
    label: cna@vuldb.com
tags:
  - nvd
ingestedAt: '2026-07-13T11:26:50.653Z'
epss: 0.00696
epssPercentile: 0.51091
---

## Overview

A vulnerability has been found in will-moss Isaiah up to 1.36.9. This affects an unknown function of the file app/main.go of the component Websocket Connection Authentication. The manipulation leads to improper authentication. The attack can be initiated remotely. The pull request to fix this issue awaits acceptance.

## Remediation

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