---
id: CVE-2025-56534
title: >-
  A cross-site scripting (XSS) vulnerability in the custom authenticator driver
  of opennebula v6.10.0.1 allows attackers to execute arbitrary web scripts or
  HTML via a crafted payload.
summary: >-
  A cross-site scripting (XSS) vulnerability in the custom authenticator driver
  of opennebula v6.10.0.1 allows attackers to execute arbitrary web scripts or
  HTML via a crafted payload.
severity: medium
cvss: 6.1
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N'
cwe:
  - CWE-79
vendor: opennebula
product: opennebula
affected:
  - opennebula < 7.0.0
patched:
  - opennebula 7.0.0
published: '2026-04-29'
updated: '2026-10-15'
sourceUpdated: '2026-10-15T19:10:00.173'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2025-56534'
references:
  - url: 'https://github.com/MarkArtamonov/OpenNebula-CVE-2025-56534'
    label: cve@mitre.org
  - url: 'https://opennebula.io/opennebula-7/'
    label: cve@mitre.org
  - url: 'https://github.com/MarkArtamonov/OpenNebula-CVE-2025-56534'
    label: 134c704f-9b21-4f2e-91b3-4a467353bcc0
tags:
  - nvd
  - exploit-available
epss: 0.00185
epssPercentile: 0.0751
exploits:
  github: 1
  githubRepos:
    - 'https://github.com/MarkArtamonov/OpenNebula-CVE-2025-56534'
  checkedAt: '2026-10-15T19:26:21.055Z'
exploitAvailable: true
ingestedAt: '2026-10-15T19:25:46.344Z'
---

## Overview

A cross-site scripting (XSS) vulnerability in the custom authenticator driver of opennebula v6.10.0.1 allows attackers to execute arbitrary web scripts or HTML via a crafted payload.

## Affected

- `opennebula < 7.0.0`

## Remediation

Upgrade past the affected range:

- `opennebula 7.0.0`