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.
History

Wed, 25 Feb 2026 16:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Wed, 25 Feb 2026 12:00:00 +0000

Type Values Removed Values Added
First Time appeared Dbarzin
Dbarzin mercator
Vendors & Products Dbarzin
Dbarzin mercator

Wed, 25 Feb 2026 04:15:00 +0000

Type Values Removed Values Added
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.
Title Mercator vulnerable to stored XSS via unescaped Blade directives in display templates
Weaknesses CWE-79
References
Metrics cvssV4_0

{'score': 8.5, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published: 2026-02-25T03:44:26.241Z

Updated: 2026-02-25T15:20:41.753Z

Reserved: 2026-02-20T22:02:30.029Z

Link: CVE-2026-27639

cve-icon Vulnrichment

Updated: 2026-02-25T15:20:33.672Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-02-25T04:16:04.280

Modified: 2026-02-25T14:15:29.980

Link: CVE-2026-27639

cve-icon Redhat

No data.