traQ is a messenger application built for Digital Creators Club traP. Prior to 3.28.3, instances configured with TRAQ_STORAGE_TYPE=local can return user-uploaded SVG or HTML content from the /files/{fileId} retrieval endpoint for direct browser rendering. An attacker with file-upload capability can provide crafted active content and induce another user to open its file URL, causing attacker-controlled JavaScript to execute in the victim's browser. This issue is fixed in version 3.28.3.
History

Fri, 06 Nov 2026 22:00:00 +0000

Type Values Removed Values Added
First Time appeared Traptitech
Traptitech traq
Vendors & Products Traptitech
Traptitech traq

Tue, 03 Nov 2026 23:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

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


Tue, 03 Nov 2026 18:30:00 +0000

Type Values Removed Values Added
Description traQ is a messenger application built for Digital Creators Club traP. Prior to 3.28.3, instances configured with TRAQ_STORAGE_TYPE=local can return user-uploaded SVG or HTML content from the /files/{fileId} retrieval endpoint for direct browser rendering. An attacker with file-upload capability can provide crafted active content and induce another user to open its file URL, causing attacker-controlled JavaScript to execute in the victim's browser. This issue is fixed in version 3.28.3.
Title traQ: XSS in the User Uploaded File Retrieval API
Weaknesses CWE-79
References
Metrics cvssV3_1

{'score': 7.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published: 2026-11-03T18:26:21.224Z

Updated: 2026-11-03T22:40:46.296Z

Reserved: 2026-07-15T22:13:00.722Z

Link: CVE-2026-63197

cve-icon Vulnrichment

Updated: 2026-11-03T22:36:38.261Z

cve-icon NVD

Status : Received

Published: 2026-11-03T19:18:08.907

Modified: 2026-11-03T23:17:50.943

Link: CVE-2026-63197

cve-icon Redhat

No data.