CVE-2026-63197
HIGH
MEDIUM
Priority: 0.02
BB Relevance:
55/100
Published: 2026-11-03
Modified: 2026-11-12
First seen: 2026-11-03
Status: active
Attack Surface
Network
Low Complexity
Conf. Impact
Integ. Impact
CVSS Vector Breakdown
AV:
Network
AC:
Low
PR:
Low
UI:
Required
S:
Unchanged
C:
High
I:
High
A:
None
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.
Weakness Classification (1)
Affected Software (2)
| Vendor | Product | Version |
|---|---|---|
| traPtitech | traQ | < 3.28.3 |
| traPtitech | traQ | < 3.28.3 |
References & Advisories (3)
x_refsource_MISC
x_refsource_MISC
x_refsource_CONFIRM