CVE-2026-27639
MEDIUMMercator < 2026.02.22 - Authenticated Stored Cross-Site Scripting via Unescaped Blade Directives
Title source: llmExploitation Summary
EIP tracks 2 public exploits for CVE-2026-27639. PoCs published by XiaomingX, hadhub.
AI-analyzed exploit summary This repository contains a functional SQL injection exploit for WordPress Quiz Maker (CVE-2025-10042), demonstrating time-based blind SQLi via crafted HTTP headers. The exploit includes data extraction logic for WordPress admin credentials and hashes.
Description
Mercator is an open source web application designed to enable mapping of information systems. A stored Cross-Site Scripting (XSS) vulnerability exists in Mercator prior to version 2026.02.22 due to the use of unescaped Blade directives (`{!! !!}`) in display templates. An authenticated user with the User role can inject arbitrary JavaScript payloads into fields such as "contact point" when creating or editing entities. The payload is then executed in the browser of any user who views the affected page, including administrators. Version 2026.02.22 fixes the vulnerability.
Exploits (2)
This repository contains a functional SQL injection exploit for WordPress Quiz Maker (CVE-2025-10042), demonstrating time-based blind SQLi via crafted HTTP headers. The exploit includes data extraction logic for WordPress admin credentials and hashes.
This repository provides references to external sources detailing CVE-2026-27639, an XSS vulnerability in Mercator. It includes links to the CVE record, a technical blog post, and a GitHub security advisory, but no actual exploit code.
References (4)
Scores
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N