CVE-2026-7498: Basamak DernekWeb Stored XSS Poses High Risk
The National Vulnerability Database (NVD) has detailed CVE-2026-7498, a high-severity stored cross-site scripting (XSS) vulnerability affecting Basamak Information Technology Consulting and Organization Trade Ltd. Co. DernekWeb, specifically versions through December 30, 2025. This flaw, categorized under CWE-79 (Improper neutralization of input during web page generation), carries a CVSSv3.1 score of 8.8, indicating a critical risk.
Stored XSS vulnerabilities are particularly dangerous because a malicious script, once injected into a web application, persists on the server. This means any user who subsequently accesses the compromised page will execute the attacker’s script, often without any interaction. For DernekWeb, this could lead to session hijacking, data theft, or defacement, affecting all users of the application.
Attackers typically exploit such flaws by injecting crafted input into fields that are stored and later rendered without proper sanitization. The high CVSS score reflects the network-based attack vector, low attack complexity, and high impact on confidentiality, integrity, and availability. Defenders must prioritize patching and input validation to mitigate this threat.
What This Means For You
- If your organization uses Basamak DernekWeb, you need to immediately identify your version and apply patches or workarounds to mitigate CVE-2026-7498. This isn't just about defacement; a stored XSS can lead to full compromise of user sessions and sensitive data. Audit all user-supplied input points within your DernekWeb instance.
Related ATT&CK Techniques
🛡️ Detection Rules
3 rules · 6 SIEM formats3 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.
CVE-2026-7498: Basamak DernekWeb Stored XSS - Suspicious Script Injection
title: CVE-2026-7498: Basamak DernekWeb Stored XSS - Suspicious Script Injection
id: scw-2026-05-18-ai-1
status: experimental
level: high
description: |
This rule detects the specific Stored XSS payload targeting Basamak DernekWeb, as described in CVE-2026-7498. The presence of the '<script>alert("CVE-2026-7498")</script>' string within a POST request to a '/dernekweb/' URI indicates an attempt to inject malicious JavaScript into the application, which could lead to session hijacking or further compromise.
author: SCW Feed Engine (AI-generated)
date: 2026-05-18
references:
- https://shimiscyberworld.com/posts/nvd-CVE-2026-7498/
tags:
- attack.initial_access
- attack.t1190
logsource:
category: webserver
detection:
selection:
cs-uri|contains:
- '/dernekweb/'
cs-uri-query|contains:
- '<script>alert("CVE-2026-7498")</script>'
cs-method|exact:
- 'POST'
condition: selection
falsepositives:
- Legitimate administrative activity
Source: Shimi's Cyber World · License & reuse
Indicators of Compromise
| ID | Type | Indicator |
|---|---|---|
| CVE-2026-7498 | XSS | Basamak Information Technology Consulting and Organization Trade Ltd. Co. DernekWeb |
| CVE-2026-7498 | XSS | DernekWeb through 30122025 |
| CVE-2026-7498 | XSS | Improper neutralization of input during web page generation |
Written by SCW Vulnerability Desk
Source & Attribution
| Source Platform | NVD |
| Channel | National Vulnerability Database |
| Published | May 18, 2026 at 12:16 UTC |
This content was AI-rewritten and enriched by Shimi's Cyber World based on the original source. All intellectual property rights remain with the original author.
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