---
id: CVE-2025-66391
title: >-
  In Citrix Cloud through 2025-11-10, an account with read-only access can
  trigger the beginning of a workflow for write operations, e.g., the system
  will send a one-time password to an attacker-controlled email address when the
  attacker a…
summary: >-
  In Citrix Cloud through 2025-11-10, an account with read-only access can
  trigger the beginning of a workflow for write operations, e.g., the system
  will send a one-time password to an attacker-controlled email address when the
  attacker a…
severity: high
cvss: 8.8
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'
cwe:
  - CWE-284
published: '2026-06-17'
updated: '2026-10-05'
sourceUpdated: '2026-10-05T16:10:00.443'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2025-66391'
references:
  - url: 'https://citrix.cloud.com/'
    label: cve@mitre.org
  - url: 'https://github.com/mandeepsohal/CVE-2025-66391/blob/main/Exploit.md'
    label: cve@mitre.org
  - url: 'https://github.com/mandeepsohal/CVE-2025-66391/blob/main/Exploit.md'
    label: 134c704f-9b21-4f2e-91b3-4a467353bcc0
tags:
  - nvd
  - exploit-available
epss: 0.00383
epssPercentile: 0.30035
exploits:
  github: 1
  githubRepos:
    - 'https://github.com/mandeepsohal/CVE-2025-66391'
  checkedAt: '2026-10-05T16:26:33.434Z'
exploitAvailable: true
ingestedAt: '2026-10-05T16:25:58.375Z'
---

## Overview

In Citrix Cloud through 2025-11-10, an account with read-only access can trigger the beginning of a workflow for write operations, e.g., the system will send a one-time password to an attacker-controlled email address when the attacker attempts to reset the password of a user account.

## Remediation

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