---
id: CVE-2026-111384
title: Nezha 1.0.0 before 2.3.15 Memory Exhaustion via File Manager WebSocket
summary: >-
  Nezha 1.0.0 before 2.3.15 contains a memory exhaustion vulnerability in the
  dashboard file manager WebSocket endpoint because fmStream never calls
  SetReadLimit, leaving message size unbounded. Authenticated users with file
  manager scopes…
severity: medium
cvss: 6.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'
cvssSource: cna
cwe:
  - CWE-770
vendor: nezhahq
product: nezha
affected:
  - nezha >= 1.0.0 < 2.3.15
published: '2026-10-16'
updated: '2026-10-16'
sourceUpdated: '2026-10-16T01:17:53.095Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-111384'
references:
  - url: 'https://github.com/nezhahq/nezha/security/advisories/GHSA-7242-982f-83p9'
    label: GitHub Security Advisory (GHSA-7242-982f-83p9)
  - url: >-
      https://github.com/nezhahq/nezha/commit/36b742a7e9a81ed782363dd19efd77b7030fbd0f
    label: Patch Commit
  - url: >-
      https://www.vulncheck.com/advisories/nezha-1.0.0-before-2.3.15-memory-exhaustion-via-file-manager-websocket
    label: >-
      VulnCheck Advisory: Nezha 1.0.0 before 2.3.15 Memory Exhaustion via File
      Manager WebSocket
tags:
  - cve.org
ingestedAt: '2026-10-16T01:55:57.990Z'
---

## Overview

Nezha 1.0.0 before 2.3.15 contains a memory exhaustion vulnerability in the dashboard file manager WebSocket endpoint because fmStream never calls SetReadLimit, leaving message size unbounded. Authenticated users with file manager scopes can send one oversized binary message to /api/v1/ws/file/:id, triggering an OOM kill that drops all agent monitoring.

## Affected

- `nezha >= 1.0.0 < 2.3.15`

## Remediation

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