PatchSiren cyber security CVE debrief

CVE-2026-7498 Basamak Information Technology Consulting and Organization Trade Ltd. Co. CVE debrief

A stored cross-site scripting (XSS) vulnerability in DernekWeb, a web application developed by Basamak Information Technology Consulting and Organization Trade Ltd. Co., allows attackers to inject malicious scripts that persist and execute in victims' browsers. The vulnerability affects DernekWeb versions through 30122025. The CVSS 3.1 score of 8.8 reflects high impact across confidentiality, integrity, and availability with network attack vector, low attack complexity, no privileges required, and user interaction required. The vulnerability was disclosed by the Turkish National Cyber Security Authority (USOM) and is tracked as TR-26-0258.

Vendor: Basamak Information Technology Consulting and Organization Trade Ltd. Co.
Product: DernekWeb
CVSS: HIGH 8.8
CISA KEV: Not listed in stored evidence
Original CVE published: 2026-05-18
Original CVE updated: 2026-05-18
Advisory published: 2026-05-18
Advisory updated: 2026-05-18

Who should care

Organizations using DernekWeb for association/NGO management; security teams monitoring Turkish software vendors; web application developers seeking XSS prevention guidance

Technical summary

The vulnerability stems from improper neutralization of input during web page generation (CWE-79), enabling stored XSS attacks. Attackers can inject persistent malicious scripts that execute when users access affected pages. The attack requires network access and user interaction but no authentication. Impact includes high severity compromise of confidentiality, integrity, and availability.

Defensive priority

HIGH

Recommended defensive actions

Apply security updates from Basamak Information Technology when available
Implement Content Security Policy (CSP) headers to mitigate XSS impact
Review and sanitize all user input in web page generation functions
Deploy web application firewall (WAF) rules for XSS detection
Conduct code review focusing on CWE-79 (Improper Neutralization of Input During Web Page Generation) patterns

Evidence notes

Vulnerability disclosed by USOM ([email protected]) with reference TR-26-0258. NVD status is 'Deferred' as of 2026-05-18. Vendor attribution based on reference domain candidate 'Gov' with low confidence; vendor name marked for review.

Official resources

2026-05-18