---
id: "CVE-2026-114442"
kind: "vulnerability"
aliases: ["CVE-2026-114442"]
title: "Apache HertzBeat: incomplete XPath validation lets authenticated users exhaust collector CPU"
severity: "medium"
cvss: null
epss: null
exploited: false
status: "open"
category: "package"
products: []
ecosystems: []
tags: ["apache-hertzbeat", "http-collector", "package", "xml"]
not_affected_if: ["auth-required", "no-http-xml-collectors", "version-1.9.1-or-later"]
published_at: "2026-11-03T11:16:52+00:00"
first_seen_at: "2026-11-03T11:20:21+00:00"
updated_at: "2026-11-03T11:20:49+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-114442", "first_seen_at": "2026-11-03T11:20:21+00:00"}]
---

# Apache HertzBeat: incomplete XPath validation lets authenticated users exhaust collector CPU

Apache HertzBeat's HTTP collector evaluates XPath expressions from monitor template alias fields without the validation applied to other script fields. A crafted XML response can make repeated evaluation consume excessive CPU and impair the collector.

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

## How to check

- Check the installed HertzBeat version against the affected list (`1.7.1`, `1.7.2`, `1.7.3`, `1.8.0`, `1.9.0`).
- Review who holds permission to create monitor templates, since that account is needed to supply the expressions.

## Fix

- Apache HertzBeat: upgrade to `1.9.1` or later.

## Timeline

- 2026-11-03T11:20:21+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-114442

## From the sources

Apache HertzBeat versions 1.7.1, 1.7.2, 1.7.3, 1.8.0, and 1.9.0 have incomplete XPath expression validation in the HTTP collector XML parsing path. An authenticated user with permission to create monitor templates can supply XPath expressions through metrics.aliasFields that are evaluated without the validation applied to parseScript. When processing a crafted XML response, repeated evaluation may consume excessive CPU resources and impair collector availability. This is a follow-up to the incomplete fix for CVE-2026-24343. The fix is included in Apache HertzBeat 1.9.1. Users should upgrade to 1.9.1 or a later version.

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