CVE-2025-40902 — The Users Functionality Due To Improper Validation Of An Inp Cross-Site Scripting (XSS)
CVE-2025-40902 — A Stored HTML Injection vulnerability was discovered in the Users functionality due to improper validation of an input parameter. An authenticated user with administrative privileges can create a malicious user whose username contains HTML tags. When a victim attempts to delete a gr
What This Means For You
- If your environment is affected by CWE-79, review your exposure and prioritize patching based on your environment. Monitor vendor advisories for CVE-2025-40902 updates and patches.
Related ATT&CK Techniques
🛡️ Detection Rules
4 rules · 6 SIEM formats4 detection rules auto-generated for this incident, mapped to MITRE ATT&CK. Sigma YAML is free — export to any SIEM format via the Intel Bot.
Drive-by Download via Browser — CVE-2025-40902
title: Drive-by Download via Browser — CVE-2025-40902
id: scw-2026-05-19-1
status: experimental
level: medium
description: |
Detects browser-spawned process execution typical of drive-by compromise attacks.
author: SCW Feed Engine (auto-generated)
date: 2026-05-19
references:
- https://shimiscyberworld.com/posts/nvd-CVE-2025-40902/
tags:
- attack.initial_access
- attack.t1189
logsource:
category: process_creation
product: windows
detection:
selection:
ParentImage|endswith:
- '\chrome.exe'
- '\firefox.exe'
- '\msedge.exe'
Image|endswith:
- '\cmd.exe'
- '\powershell.exe'
- '\mshta.exe'
- '\wscript.exe'
condition: selection
falsepositives:
- Legitimate activity from CVE-2025-40902
Source: Shimi's Cyber World · License & reuse
Indicators of Compromise
| ID | Type | Indicator |
|---|---|---|
| CVE-2025-40902 | vulnerability | CVE-2025-40902 |
| CWE-79 | weakness | CWE-79 |
Written by SCW Vulnerability Desk
Source & Attribution
| Source Platform | NVD |
| Channel | National Vulnerability Database |
| Published | May 19, 2026 at 17:16 UTC |
This content was curated and summarized by Shimi's Cyber World for informational purposes. It is not copied or republished in full. All intellectual property rights remain with the original author and source.
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