CVE-2026-63197: traPtitech traQ · Cross-site Scripting
Affects traPtitech traQSource CVE Database V5
Not known to be exploited · CVSS 7.3 High : upgrade to 3.28.3 soon.
Data as of 3 Nov 2026, 18:43 UTC
Thin evidence
One scorer or none| CNA (GitHub_M) | CVSS 3.1 | 7.3 |
|---|
- Patch
- Available – fixed in 3.28.3
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:NExploitation evidence
Disclosed: evidence found.
CVE published 3 Nov 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 3 Nov 2026.
What to do
Upgrade traPtitech traQ to 3.28.3.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| traPtitechtraQ | Affected
| Fixed in
|
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.